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TZID:Asia/Jerusalem
X-WR-TIMEZONE:Asia/Jerusalem
BEGIN:VEVENT
UID:27@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230420T143000
DTEND;TZID=Asia/Jerusalem:20230420T153000
DTSTAMP:20230416T093818Z
URL:https://math.technion.ac.il/en/events/graduation-seminar-tom-yotam/
SUMMARY:MSc Graduation Seminar - Measurement Simplification in POMDP with
Performance Guarantees
DESCRIPTION:Lecturer:Tom Yotam\n Location:ZOOM\n MSc Graduation Seminar - M
easurement Simplification in POMDP with Performance Guarantees\nAdvisor: A
ssociate Professor Vadim Indelman\nAbstract:\nPOMDP planning is at the hea
rt of any autonomous system acting with imperfect information. The cost of
solving the POMDP planning problem is exponential in the action and obser
vation spaces\, thus rendering it unfeasible for many online systems. We p
ropose a novel approach to efﬁcient decision making\, by simplifying the
observation space. We formulate analytical bounds on the expected informa
tion-theoretic reward\, for the most general belief distributions. These b
ounds are then used to plan efﬁciently while keeping performance guarant
ees. We propose a speciﬁc variant of these bounds for Gaussian beliefs a
nd show performance improvement of at least a factor of 4.\n\n \;\n\n&
nbsp\;\n\n \;\n https://technion.zoom.us/j/97808802863?pwd=aVRUZ3UvOGZ
aajlFRnU2T3FiNnlxdz09
CATEGORIES:Graduation Seminars,Seminars
END:VEVENT
BEGIN:VEVENT
UID:71@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230515T143000
DTEND;TZID=Asia/Jerusalem:20230515T153000
DTSTAMP:20230531T084018Z
URL:https://math.technion.ac.il/en/events/m-sc-graduation-seminar-eneraliz
ation-of-shelah-and-spencer-0-1-laws-to-multi-parameter-random-simplicial-
complexes/
SUMMARY:M.Sc. graduation seminar: eneralization of Shelah and Spencer 0-1 L
aws to Multi- Parameter Random Simplicial Complexes.
DESCRIPTION:Lecturer:עידן חן\n Location:אמאדו 814 \n תואר :
מגיסטר\n מנחה : פרופ"ח רון רוזנטל\n כותרת\n
Generalization of Shelah and Spencer 0-1 Laws to Multi - Parameter Random
Simplicial Complexes\nאבסטרקט\nThe Erdős-Rényi model G(n\, p)\, i
s a random graph on n vertices\, where each edge is added independently\nw
ith probability p = p(n). Zero-one laws for random graphs and in particula
r for G(n\, p) have\nbeen extensively studied since the appearance of rand
om graph models. In particular\, two striking\nresults regarding the behav
iour of first-order logic properties in the Erdős-Rényi model are:\n1. I
n 1969 Glebski˘ı\, Kogan\, Liogon’ki˘ı\, Talanov and independently i
n 1976 Fagin proved that for\np which is independent of n (fixed)\, every
first order logic property of G(n\, p) is either true\nasymptotically almo
st surely or false asymptotically almost surely.\n2. In 1988 Shelah and Sp
encer extended the above zero-one law into the case where p = n−α for\n
any irrational α.\nIn this talk we will discuss generalizations of such z
ero-one laws to random simplicial complexes of\narbitrary dimension and sh
ow that analogue statements hold.78/87\nThe talk is based on my master the
sis under the supervision of 14on Rosenthal\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:70@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230521T013000
DTEND;TZID=Asia/Jerusalem:20230521T023000
DTSTAMP:20230514T115017Z
URL:https://math.technion.ac.il/en/events/m-sc-graduation-seminar-the-bogo
molov-gieseker-inequality-for-surfaces-with-rational-double-points/
SUMMARY:M.Sc. Graduation Seminar - The Bogomolov-Gieseker Inequality for S
urfaces with Rational Double Points
DESCRIPTION:Lecturer:אלן סורני\n Location:אמאדו 814 \n סמי
נר סיום מאסטר של אלן סורני\nמנחים ד"ר הווא
רד נואר ופרופח דני נפטין\nThe Bogomolov-Gieseker Inequ
ality for Surfaces with Rational Double Points כותרת\nאבסטרק
ט\nThe Bogomolov-Gieseker inequality for smooth projective surfaces in ch
aracteristic zero is the inequality $\\mathrm{ch}_1\\left({\\mathcal{E}\\r
ight)^2 - 2 \\mathrm{ch}_0\\left(\\mathcal{E}\\right) . \\mathrm{ch}_2\\le
ft(\\mathcal{E}\\right) \\geq 0$\, where $\\mathcal{E}$ is a slope semista
ble coherent sheaf. The inequality has many applications including the b
oundedness of the moduli space of semistable sheaves\, explicit restrictio
n theorems for stable sheaves\, and the existence of Bridgeland stability
conditions which have been applied to solve many classical problems in alg
ebraic geometry. In this talk we give an algebraic proof of the Bogomolo
v-Gieseker inequality on projective surfaces with at worst rational double
point singularities. Such singular points are of particular interest as t
hey are the possible canonical singularities of surfaces\, i.e. those sing
ularities arising in running the minimal model program on surfaces.\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:74@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230529T143000
DTEND;TZID=Asia/Jerusalem:20230529T153000
DTSTAMP:20230528T191122Z
URL:https://math.technion.ac.il/en/events/on-block-rank-of-matrice-graduat
ion-seminar/
SUMMARY:M.Sc. Graduation Seminar: On Blocky rank of matrices
DESCRIPTION:Lecturer:Daniel Avraham \n Location:Amado 719\n \;\n\nAdvi
sor: Prof. Amir Yehudayoff\n\nAbstract:\n\nIn circuit complexity theory
we classify Boolean functions according to the size of the\n\nBoolean circ
uits that computes them. We are going to talk about a new matrix rank call
ed\n\nthe "Blocky rank" which was defined not long ago and show how we can
achieve a lower\n\nbound on the size of 2-depth circuit that computes a f
unction f by finding lower bound on\n\nthe Blocky rank. We will also discu
ss about general properties of this rank and computes the\n\nrank for a Li
near threshold function\, which is a basic operator in our circuits. The I
nner\n\nproduct function was studied before in the context of circuit size
and by using the blocky\n\nrank we improve the known result.\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:78@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230601T123000
DTEND;TZID=Asia/Jerusalem:20230601T133000
DTSTAMP:20230605T064802Z
URL:https://math.technion.ac.il/en/events/minimally-ramified-dihedral-exte
nsions-over-fqt-graduation-seminar/
SUMMARY:Minimally Ramified Dihedral Extensions Over Fq(T) - Graduation Semi
nar
DESCRIPTION:Lecturer:Tal Shahaf \n Location:Amado 814 \n טל שחף\nתו
אר: מגיסטר\n MINIMALLY RAMIFIED DIHEDRAL EXTENSIONS OVER Fq(T)\n
מנחים : פרופ' אמריטוס סון יעקב\, פרופ"ח נפט
ין דני\nאבסטרקט מצורף\nתאריך ההרצאה: יום ח
מישי\, 1 ביוני 2023 בשעה 13:00 \, בנין אמדו 814\n\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:92@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230622T113000
DTEND;TZID=Asia/Jerusalem:20230622T123000
DTSTAMP:20230611T051143Z
URL:https://math.technion.ac.il/en/events/dynamic-and-numeric-aspects-of-p
oisson-brackets-invariants-graduation-seminar/
SUMMARY:Dynamic and Numeric Aspects of Poisson Brackets Invariants - Gradua
tion seminar
DESCRIPTION:Lecturer:Itamar Rosenfeld Rauch\n Location:Amadao 719 \n שם
: איתמר רוזנפלד ראוך\nתואר : דוקטורט\nמנחה
: ד"ר חנבסקי מיכאל\nמועד: 22/6\, באמאדו 719 בשע
ה 11:30\n \;\n\nDynamic and Numeric Aspects of Poisson Brackets Invar
iants\n\nAbstract:\n\nThe Poisson brackets of smooth functions\, {F\, G}\,
measure the conservation of F along Hamiltonian trajectories of G. The $C
^0$-semicontinuity of the Poisson brackets was proven in 2010 by Entov and
Polterovich\, a surprising fact considering they involve the first deriva
tives of F\, and G. In this talk I will discuss this $C^0$-robustness phen
omenon and show how certain variational problems involving the supremum no
rm of the Poisson brackets give rise to dynamically flavored invariants. G
iven time\, I will comment on a numeric experiment to calculate one such i
nvariant.\n\n \;\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:106@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230725T120000
DTEND;TZID=Asia/Jerusalem:20230725T130000
DTSTAMP:20230627T070855Z
URL:https://math.technion.ac.il/en/events/analysis-of-stability-and-accura
cy-of-permutation-invariant-embedding-schemes-graduation-seminar/
SUMMARY:Analysis of Stability and Accuracy of Permutation Invariant Embeddi
ng Schemes - Graduation Seminar
DESCRIPTION:Lecturer:Ravina Ravina \n Location:Amado 814\n Advisor: Nadav D
ym\n\nAbstract is attached\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:110@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230801T100000
DTEND;TZID=Asia/Jerusalem:20230801T110000
DTSTAMP:20230730T053420Z
URL:https://math.technion.ac.il/en/events/computational-methods-for-harmon
ic-mappings-and-its-uniqueness-master-graduation-seminar/
SUMMARY:Computational Methods for Harmonic Mappings and its Uniqueness - Ma
ster graduation seminar
DESCRIPTION:Lecturer:Terry Wallace\n Location:ZOOM\n Advisor: Professor Eme
ritus Bshouty Daoud\n\n \;\n\nTitle: Computational Methods for Harmoni
c Mappings and its Uniqueness\n\n \;\n\nAbstract\; The well-known Rie
mann Mapping Theorem (RMT) for analytic mappings states the existence\n\na
nd uniqueness of conformal mappings between two simply connected domains.
The existence of RMT for\n\nharmonic mappings with specific dilatation h
olds whereas the uniqueness is wide open. Given a harmonic mapping\n\nbe
tween the unit disk and a polygonal domain\, we determine its uniqueness
using a computational method.\n\n \;\n https://gtiit.zoom.us/j/996709
93599?pwd=Rml2WVRsNEFYOGNTc3o4NW1sRXM0UT09
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:113@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20230928T140000
DTEND;TZID=Asia/Jerusalem:20230928T150000
DTSTAMP:20230926T080440Z
URL:https://math.technion.ac.il/en/events/almost-universal-quadratic-forms
-and-special-cubic-fourfolds-msc-graduation-seminar/
SUMMARY:Almost-Universal Quadratic Forms and Special Cubic Fourfolds - MSc
Graduation Seminar
DESCRIPTION:Lecturer:Elad Gal\n Location:Amado 719\n The representability o
f natural numbers by sums of squares is a beautiful and rich question in n
umber theory with a long history. It naturally lead to the question of r
epresenting natural numbers by other positive definite quadratic forms and
the famous recent 15 and 290 Theorems. In this talk we begin by discuss
ing some of this story with an aim to understanding what kinds of subsets
of the natural numbers can be the image of a positive definite quadratic f
orm. We will the discuss the main ideas going into our main theorem\, wh
ich in this language\, is a statement about how well\, or efficiently\, th
e Hassett subset can be described as the image of a positive-definite quad
ratic form\, namely that the minimal rank of a quadratic form supporting i
t is four. Here the Hassett subset is the set of natural numbers d large
r than 8 and congruent to 0 or 2 modulo 6. Our interest in this question
for this particular subset is motivated by a question about moduli spaces
of cubic fourfolds in algebraic geometry. When rephrased in algebraic g
eometry terms\, we will explain how our result about quadratic forms prove
s that the intersection all the Hassett divisors C_d for d in (you guessed
it!) the Hassett subset has dimension 16. Time permitting\, we will exp
lain why this interesting for other question in algebraic geometry.\n\nAdv
isor: Dr. Howard Nuer\n\n \;\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:114@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20231101T113000
DTEND;TZID=Asia/Jerusalem:20231101T123000
DTSTAMP:20231022T062216Z
URL:https://math.technion.ac.il/en/events/%d7%91%d7%a0%d7%99%d7%95%d7%aa-%
d7%97%d7%93%d7%a9%d7%95%d7%aa-%d7%91%d7%aa%d7%95%d7%a8%d7%94-%d7%a1%d7%a4%
d7%a7%d7%98%d7%a8%d7%9c%d7%99%d7%aa-%d7%a9%d7%9c-%d7%92%d7%a8%d7%a4%d7%99%
d7%9d-%d7%a1%d7%9e/
SUMMARY:בניות חדשות בתורה ספקטרלית של גרפים -
סמינר סיום דוקטורט
DESCRIPTION:Lecturer:סולימאן חמוד \n Location:אמאדו 719\n
שם הסטודנט :סולימאן חמוד\nמנחה: פרופסור א
בי ברמן\nתואר: דוקטורט\nכותרת ההרצאה: בניו
ת חדשות בתורה ספקטרלית של גרפים\nתאריך הה
רצאה: 1/11/23 בשעה 11:30 \, באמדו 719\nתקציר : לגרף
קשורות מספר מטריצות – מטריצת השכנות\, הל
פלסיאן\, הלפלסיאן ללא סימנים\, הלפלסיאן ה
מנורמל\nאם גרפים רגולרים הם קוספקטרלים ב
יחס לאחת המטריצות אז הן קוספקטרלים ביחס
לכל הארבע. בהרצאה נתאר בניות של זוגות גרפ
ים לא רגולרים\,\nלא איזומורפיים שהם קוספק
טרלים ביחס לארבע המטריצות\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:143@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240117T140000
DTEND;TZID=Asia/Jerusalem:20240117T150000
DTSTAMP:20240102T092844Z
URL:https://math.technion.ac.il/en/events/formation-and-characterization-o
f-synthetic-rna-protein-granules/
SUMMARY:Formation and characterization of synthetic RNA-protein granules
DESCRIPTION:Lecturer:נאור גרניק\n Location:אולם 100 בפקול
טה לביוטכנולוגיה ומזון\n Liquid-solid transition\, als
o known as gelation\, is a specific form of phase separation in which mole
cules cross-link to form a highly interconnected compartment with solid
– like dynamical properties. Here\, we utilize RNA hairpin coat-protein
binding sites to form synthetic RNA based gel-like granules via liquid-sol
id phase transition. We show both in-vitro and in-vivo that hairpin contai
ning synthetic long non-coding RNA (slncRNA) molecules granulate into brig
ht localized puncta. We further demonstrate that upon introduction of the
coat-proteins\, less-condensed gel-like granules form with the RNA creatin
g an outer shell with the proteins mostly present inside the granule. More
over\, by tracking puncta fluorescence signals over time\, we detected add
ition or shedding events of slncRNA-CP nucleoprotein complexes. Consequent
ly\, our granules constitute a genetically encoded storage compartment for
protein and RNA with a programmable controlled release profile that is de
termined by the number of hairpins encoded into the RNA. Our findings have
important implications for the potential regulatory role of naturally occ
urring granules and for the broader biotechnology field.\nתואר: מגי
סטר\nשם המנחה: רועי עמית\n \;\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:168@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240208T133000
DTEND;TZID=Asia/Jerusalem:20240208T143000
DTSTAMP:20240206T084237Z
URL:https://math.technion.ac.il/en/events/specialization-of-galois-groups-
and-related-low-genus-phenomena-graduation-seminar/
SUMMARY:Specialization of Galois groups and related low-genus phenomena - G
raduation Seminar
DESCRIPTION:Lecturer:Tali Monderer \n Location:Amado 814\n \n\n\n\n\n\nGive
n an irreducible bivariate polynomial f(t\,x) with rational coefficients\,
what groups H appear as the Galois group of f(t'\,x) for infinitely many
rationals t'? A key step in the investigation of this question\, and many
others relating to specialization and reducibility\, lies in determining t
he subcoverings of genus 0 and 1 of the corresponding Galois cover of the
projective line. We determine\, for several families of Galois covers of l
arge degree\, the low genus subcovers\; and describe applications to the s
pecialization problem described above and to the Davenport-Lewis-Schinzel
problem regarding reducibility of curves given by the equation h(x)=g(y).&
nbsp\;\n\nAdvisor: Prof. Danny Neftin\n\n\n\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:179@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240212T160000
DTEND;TZID=Asia/Jerusalem:20240212T170000
DTSTAMP:20240207T080053Z
URL:https://math.technion.ac.il/en/events/approximation-of-diagonally-inva
riant-measure-by-tori-measures-graduation-seminar/
SUMMARY:Approximation of Diagonally Invariant Measure by Tori Measures - Gr
aduation Seminar
DESCRIPTION:Lecturer:Yuval Yifrach\n Location:Amado 815\n We consider the f
amily of periodic measures for the full diagonal action on the space of un
imodular lattices. This family is important and natural due to its tight r
elation to class groups in number fields. We show that many natural famili
es of measures on the space of lattices can be approximated using this fam
ily (in the weak sense). E.g.\, in our work we show that for any 0<\;c\\
leq 1\, the measure cm_{X_n} can be approximated this way\, where m_{X_n}
denotes the Haar probability measure on X_n. Moreover\, we show that non e
rgodic measures can be approximated. Our proof is based on the equidistrib
ution of Hecke neighbors and on constructions of special number fields. We
will discuss the results\, alternative ways to attack the problem\, and o
ur method of proof.\n\nThis talk is based on a joint work with Omri Solan.
\n\nAdvisor: Prof. Uri Shapira\n https://technion.zoom.us/j/99968891639
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:180@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240215T143000
DTEND;TZID=Asia/Jerusalem:20240215T153000
DTSTAMP:20240211T072005Z
URL:https://math.technion.ac.il/en/events/projective-bridgeland-semistable
-moduli-spaces-on-quotient-stacks-graduation-seminar/
SUMMARY:Projective Bridgeland Semistable Moduli Spaces on Quotient Stacks -
Graduation Seminar
DESCRIPTION:Lecturer:טל בן יהודה\n Location:אמדו 814\n Moduli
spaces are fundamental objects of interest across mathematics and physics.
These spaces parametrize isomorphism classes of algebro-geometric objects
\, which come about frequently as solutions to classification problems. In
algebraic geometry\, of special interest are moduli spaces of coherent sh
eaves on smooth projective varieties. A fruitful approach to studying thes
e moduli spaces is via Fourier-Mukai transforms on the bounded derived cat
egory D^b(CohX)\, built as the category of complexes of coherent sheaves o
n X\, up to quasi-isomorphism. But these autoequivalences do not always ta
ke sheaves to sheaves. Enter Bridgeland's stability conditions - these c
onditions\, whose origins began in string theory\, allow us to apply autoe
quivalences freely and use our intuition from classical stability. Under s
uitable assumptions\, for each stability condition and each numerical clas
s\, moduli spaces of stable objects in D^b(X) for an algebraic variety X\,
exist as proper algebraic spaces. This formalism includes many previously
studied moduli spaces such as moduli spaces of Giesker or slope-stable sh
eaves.\n\n \;\n\nFor most applications of Bridgeland stability\, one n
eeds projective coarse moduli spaces of Bridgeland semistable objects. One
problematic aspect of Bridgeland stability is showing that the proper alg
ebraic spaces above are in fact projective varieties. Many varieties come
about as quotients of covering varieties by the action of some group G. We
prove the following conjecture - Let X be a smooth projective variety\, a
nd G a finite cyclic group acting on X. Assume X carries projective Bridge
land semistable moduli spaces\, meaning for numerical class v and \\sigma
\\in Stab(X) (a stability condition) the set M_\\sigma(v) of \\sigma-semis
table objects of type v is such a projective moduli space\, then the quoti
ent stack [X/G] has projective Bridgeland semistable moduli spaces as well
. This is helpful to show projectivity in a range of cases\, as well as ma
king a step towards finding a general construction of such moduli spaces.\
nתואר : מגיסטר\nמנחה : ד"ר נואר צבי יעקב\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:191@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240226T160000
DTEND;TZID=Asia/Jerusalem:20240226T170000
DTSTAMP:20240226T051634Z
URL:https://math.technion.ac.il/en/events/covering-radii-in-positive-chara
cteristic-graduation-seminar/
SUMMARY:Covering Radii in Positive Characteristic - Graduation Seminar
DESCRIPTION:Lecturer:נוי סופר אהרונוב\n Location:אמדו 919
\n A fascinating question in geometry of number pertains to the covering r
adius of lattice with respect to an interesting function. For example\, gi
ven a convex body C and a lattice L in R^d\, it is interesting to ask what
is the infimal r ≥ 0 such that L + rC = R^d. Another interesting coveri
ng radius is the multiplicative covering radius\, which connects to dynami
cs due to its invariance under the diagonal group. It was conjectured by M
inkowski that the multiplicative covering radius is bounded above by 2^{
-d} and that this upper bound is obtained only on AZ^d. In this talk I wil
l discuss surprising results pertaining to covering radii in the positive
characteristic setting and discover several surprising results. Some of m
y results include explicitly connecting between the covering radii with re
spect to convex bodies and successive minima and proving a positive charac
teristic analogue of Minkowski’s function.\n \;\nשם : נוי סו
פר אהרונוב\nתואר : דוקטורט\nמנחה : פרופ' או
רי שפירא\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:195@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240228T130000
DTEND;TZID=Asia/Jerusalem:20240228T140000
DTSTAMP:20240226T074750Z
URL:https://math.technion.ac.il/en/events/network-formation-for-learning-g
raduation-seminar/
SUMMARY:Network Formation for Learning - Graduation Seminar
DESCRIPTION:Lecturer:Lior Sasson\n Location:Room 527 Bloomfield Building\,
הפקולטה למדעי הנתונים וההחלטות\n We study a net
work formation interaction in which the formatted network serves the agent
s to form beliefs about an unknown state via the DeGroot naive learning pr
ocess. Consequently\, the value of the network captures the ability of the
network to aggregate information. We focus on the notion of \\textit{stab
le networks} in which agents do not want to create or erase any of their l
inks.\nWe precisely characterize the costs for which a stable network exis
ts. Whenever a stable network exists\, either the cycle network\, the line
network\, or the empty network is stable. We further provide structural p
roperties for every stable network: in every stable network\, the degree o
f any two vertices differs by at most one. As a corollary we get that any
stable network aggregates information well and a price of anarchy upper
bound is provided.\n\nAdvisor: Prof. Udi Yariv\n\n\n\n\n\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:200@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240306T133000
DTEND;TZID=Asia/Jerusalem:20240306T143000
DTSTAMP:20240303T105813Z
URL:https://math.technion.ac.il/en/events/many-valued-modal-logic-graduati
on-seminar/
SUMMARY:Many-Valued Modal Logic - Graduation Seminar
DESCRIPTION:Lecturer:עמיר קרניאל \n Location:אמאדו 814 + ז
ום \n Modal logic is a kind of logic used to represent statements about
necessity and possibility. It is used in computer science to reason about
concepts such as uncertainty and time-dependent properties\, for example i
n formal verification and in knowledge representation.\n\n \;\n\nMany-
valued logic is a logic in which there are more than two truth values. It
is used\, for example\, to represent partial or inconsistent information i
n databases and in information retrieval systems.\n\n \;\n\nWe combine
the two concepts in a general and comprehensive way. Specifically\, given
any finite ordered set of truth values and any set of connectives\, we de
fine two main kinds of many-valued modal logics\, formulated in a certain
syntax called Gentzen's sequent calculus\, and prove their soundness and s
trong completeness with respect to certain kinds of Kripke semantics.\n\n&
nbsp\;\n\nAdditionally\, we show results such as logic extensions\, finite
model property\, strong decidability\, duality via negation and relation
to intuitionistic logics.\n\n \;\nמנחה :פרופ' אמריטוס
קמינסקי מיכאל \, מדעי המחשב\n https://technion.zoom.u
s/j/4520047073
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:220@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240331T143000
DTEND;TZID=Asia/Jerusalem:20240331T153000
DTSTAMP:20240327T105618Z
URL:https://math.technion.ac.il/en/events/title-chaotic-dynamics-in-the-ro
ssler-system/
SUMMARY:Title - Chaotic dynamics in the Rössler system
DESCRIPTION:Lecturer:ערן אגרא \n Location:אמדו 814 \n Originally
introduced in 1974 by O.E. Rössler\, the Rössler system is one of the m
ost famous examples of chaotic flows\, being generated by a stretch-and-fo
ld mechanism. Despite being (arguably) the least non-linear flow one can t
hink of\, the Rössler system is known to be rich in nonlinear phenomena
- for example: spiral homoclinic bifurcations\, stability windows and peri
od-doubling routes to chaos to name a few. In this talk we state and prove
a topological criterion for the existence of complex dynamics for the Rö
ssler system\, which include infinitely many periodic trajectories. Time
permitting\, we will characterize the topology of these periodic trajector
ies\, prove their persistence under perturbations - as well as discuss th
eir possible bifurcations and how it all relates to the well-known Rössle
r attractor. \n \;\nמנחה: ד"ר טלי פינסקי\n \n \n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:224@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240403T143000
DTEND;TZID=Asia/Jerusalem:20240403T153000
DTSTAMP:20240404T065231Z
URL:https://math.technion.ac.il/en/events/boolean-functions-on-some-permut
ation-groups-graduation-seminar/
SUMMARY:Boolean functions on some permutation groups- Graduation Seminar
DESCRIPTION:Lecturer:יהונתן שפיגלמן \n Location:אמאדו 814
\n Abstract Attached\nAdvisor - Prof. Yuval Filmus\n\n \;\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:225@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240403T143000
DTEND;TZID=Asia/Jerusalem:20240403T153000
DTSTAMP:20240404T081057Z
URL:https://math.technion.ac.il/en/events/boolean-functions-on-some-permut
ation-groups-degree-1-graduation-seminar/
SUMMARY:Boolean functions on some permutation groups Degree 1 - Graduation
Seminar
DESCRIPTION:Lecturer:יהונתן שפיגלמן\n Location:אמאדו 814
\n Abstract attached\n\nAdvisor: Prof. Yuval Filmus\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:229@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240515T143000
DTEND;TZID=Asia/Jerusalem:20240515T153000
DTSTAMP:20240506T053635Z
URL:https://math.technion.ac.il/en/events/topology-of-random-two-dimension
al-posets-graduation-seminar/
SUMMARY:Topology of random two-dimensional posets - Graduation Seminar
DESCRIPTION:Lecturer:עומר מויאל \n Location:814 אמאדו\n Rando
m simplicial complexes are one generalization of random graphs. In this se
minar we will consider the model of 'permutations complexes'\, a simplicia
l complex obtained from a random permutations. More precisely\, let \\pi b
e a permutation of length n. Our model is the order complex of the partial
order induced by \\pi on the set [n].\nWe will discuss various topologica
l properties of this complex\, including homological dimension and homotop
y type. Our main result is that w.h.p. the complex is r-connected for r=lo
g(n)/loglog(n) . We will also show that the complex contains an octahedral
sphere of dimension c\\sqrt(n)\, and give an upper bound and a new lower
bound on c.\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:236@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240520T123000
DTEND;TZID=Asia/Jerusalem:20240520T133000
DTSTAMP:20240515T050118Z
URL:https://math.technion.ac.il/en/events/diophantine-approximation-formal
-laurent-series-and-hankel-matrices-graduation-seminar/
SUMMARY:Diophantine approximation\, formal Laurent series and Hankel Matric
es - Graduation Seminar
DESCRIPTION:Lecturer:Matan Ivgi\n Location:Amado 814\n Diophantine approxim
ation in function fields gives rise to many combinatorial questions. One i
nteresting question is the computation of the Hausdorff dimension of the s
et of badly approximable formal Laurent series. Those series are tightly c
onnected to Hankel matrices with specific properties. I will talk about th
is connection and how I used it in order to solve this question.\n\nAdviso
r: Erez Nesharim\n
CATEGORIES:Graduation Seminars
END:VEVENT
BEGIN:VEVENT
UID:238@math.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20240521T120000
DTEND;TZID=Asia/Jerusalem:20240521T130000
DTSTAMP:20240516T064609Z
URL:https://math.technion.ac.il/en/events/connectedness-of-random-simplici
al-complexes-based-on-steiner-systems-graduation-seminar/
SUMMARY:Connectedness of Random Simplicial Complexes Based on Steiner Syste
ms - Graduation Seminar
DESCRIPTION:Lecturer:Alexander Shleyfman\n Location:Amad0 719 \n The $\\mat
hcal{I}(n\, k)$ is a generative model of random almost $k$-regular graphs\
, where graphs are constructed from $k$ randomly permuted perfect matchi
ngs on the vertex set $[n]$. We show that the likelihood of a graph $G$ dr
awn from $ \\mathcal{I}(n\, k)$ being disconnected is bounded by $O(n^{-k+
2})$.\n\nBased on this observation\, we establish a threshold property for
hypergraph connectedness within almost $k$-regular $d$-dimensional comple
xes\, as introduced by Abu-Fraiha (2016). Specifically\, these complexes a
re almost surely hypergraph connected when $k >\; d+1$\, while the proba
bility of disconnection decreases with $k$ for $k \\leq d$.\n\nAdditionall
y\, we demonstrate that for random 2-dimensional simplicial complexes (the
model for general $d$ was introduced by Lubotzky\, Luria\, and Rosenthal
(2019))\, where the 1-cells are bounded by a degree of $k$\, the complex i
s almost surely homologically connected over $\\mathbb{Z}_2$ when $k=371$.
\n\nAdvisor: Prof. Roy Meshulam\n
CATEGORIES:Graduation Seminars
END:VEVENT
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