با سلام، ياد آوري سخنراني آنلاين پروفسور آمنون نیمن، دانشگاه ملی استرالیا فردا چهارشنبه 2 تير ماه 1400 ساعت 15:30 الي 16:30 به وقت ايران.
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IPM-Isfahan Colloquium
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Speaker: Amnon Neeman, Australian National University (ANU)
Title: Approximable triangulated categories and applications
Abstract: We will describe a recent development, which is based on borrowing the technique of studying Cauchy sequences in metric spaces to the world of triangulated and derived categories. The fact that such a strange marriage produces interesting applications will be the main focus of the talk. We will explain how it can be used (1) to prove a conjecture of Bondal and Van den Bergh, (2) give a really short, sleek proof of Serre's old GAGA theorem, and (3) give a much clearer and more conceptual approach to an old theorem of Rickard's about Morita equivalence. Knowledge of metric spaces and completion will be assumed. We will not give much of a review of triangulated categories, but will spell out the motivating examples to keep in mind.
Date and Time: Jun 23, 2021, 03:30 PM (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/94451905973?pwd=WXovdFpvU3dlMmpNUGdieHpTa24xdz09
Meeting ID: 944 5190 5973
Passcode: 210623
***********************
IPM-Isfahan Colloquium
***********************
Speaker: Amnon Neeman, Australian National University (ANU)
Title: Approximable triangulated categories and applications
Abstract: We will describe a recent development, which is based on borrowing the technique of studying Cauchy sequences in metric spaces to the world of triangulated and derived categories. The fact that such a strange marriage produces interesting applications will be the main focus of the talk. We will explain how it can be used (1) to prove a conjecture of Bondal and Van den Bergh, (2) give a really short, sleek proof of Serre's old GAGA theorem, and (3) give a much clearer and more conceptual approach to an old theorem of Rickard's about Morita equivalence. Knowledge of metric spaces and completion will be assumed. We will not give much of a review of triangulated categories, but will spell out the motivating examples to keep in mind.
Date and Time: Jun 23, 2021, 03:30 PM (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/94451905973?pwd=WXovdFpvU3dlMmpNUGdieHpTa24xdz09
Meeting ID: 944 5190 5973
Passcode: 210623
Zoom Video
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IPM-Isfahan Colloquium
*******************
Speaker: Amnon Neeman, Australian National University (ANU)
Title: Approximable triangulated categories and applications
Abstract: We will describe a recent development, which is based on borrowing the technique of studying Cauchy sequences in metric spaces to the world of triangulated and derived categories. The fact that such a strange marriage produces interesting applications will be the main focus of the talk. We will explain how it can be used (1) to prove a conjecture of Bondal and Van den Bergh, (2) give a really short, sleek proof of Serre's old GAGA theorem, and (3) give a much clearer and more conceptual approach to an old theorem of Rickard's about Morita equivalence. Knowledge of metric spaces and completion will be assumed. We will not give much of a review of triangulated categories, but will spell out the motivating examples to keep in mind.
Date and Time: Jun 23, 2021, 03:30 PM (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/94451905973?pwd=WXovdFpvU3dlMmpNUGdieHpTa24xdz09
Meeting ID: 944 5190 5973
Passcode: 210623
IPM-Isfahan Colloquium
*******************
Speaker: Amnon Neeman, Australian National University (ANU)
Title: Approximable triangulated categories and applications
Abstract: We will describe a recent development, which is based on borrowing the technique of studying Cauchy sequences in metric spaces to the world of triangulated and derived categories. The fact that such a strange marriage produces interesting applications will be the main focus of the talk. We will explain how it can be used (1) to prove a conjecture of Bondal and Van den Bergh, (2) give a really short, sleek proof of Serre's old GAGA theorem, and (3) give a much clearer and more conceptual approach to an old theorem of Rickard's about Morita equivalence. Knowledge of metric spaces and completion will be assumed. We will not give much of a review of triangulated categories, but will spell out the motivating examples to keep in mind.
Date and Time: Jun 23, 2021, 03:30 PM (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/94451905973?pwd=WXovdFpvU3dlMmpNUGdieHpTa24xdz09
Meeting ID: 944 5190 5973
Passcode: 210623
Zoom Video
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution…
با سلام،
مدسه تابستانی "گراف جبرها، گرایش های کنونی و چشم اندازها"
لینک سخنرانی ها
Zoom Meeting
https://zoom.us/j/96847232558?pwd=UE9LZ0RMdU1OckQ4ekMzckhtT0lmQT09
Meeting ID: 968 4723 2558
Passcode: 210609
مدسه تابستانی "گراف جبرها، گرایش های کنونی و چشم اندازها"
لینک سخنرانی ها
Zoom Meeting
https://zoom.us/j/96847232558?pwd=UE9LZ0RMdU1OckQ4ekMzckhtT0lmQT09
Meeting ID: 968 4723 2558
Passcode: 210609
با سلام، ياد آوري سخنراني آنلاين پروفسور جايلز گاردام، از دانشگاه مونستر، آلمان، فردا چهارشنبه 13 مرداد ماه 1400 ساعت 17:00 الي 18:00 به وقت ايران.
Speaker: Giles Gardam (University of Münster)
Title: Kaplansky's conjectures
Abstract: Three conjectures on group rings of torsion-free groups are commonly attributed to Kaplansky, namely the unit, zero divisor and idempotent conjectures. For example, the zero divisor conjecture predicts that if K is a field and G is a torsion-free group, then the group ring K[G] has no zero divisors. I will survey what is known about the conjectures, including their relationships to each other and to other conjectures and group properties, and present my recent counterexample to the unit conjecture.
Date and Time: Wednesday, August 04, 2021, at 17:00 (CET)
Zoom Link:
https://zoom.us/j/9086116889?pwd=TnhBUllnQlkwYXR4OWMxOHpjUSsyUT09
Speaker: Giles Gardam (University of Münster)
Title: Kaplansky's conjectures
Abstract: Three conjectures on group rings of torsion-free groups are commonly attributed to Kaplansky, namely the unit, zero divisor and idempotent conjectures. For example, the zero divisor conjecture predicts that if K is a field and G is a torsion-free group, then the group ring K[G] has no zero divisors. I will survey what is known about the conjectures, including their relationships to each other and to other conjectures and group properties, and present my recent counterexample to the unit conjecture.
Date and Time: Wednesday, August 04, 2021, at 17:00 (CET)
Zoom Link:
https://zoom.us/j/9086116889?pwd=TnhBUllnQlkwYXR4OWMxOHpjUSsyUT09
Zoom Video
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution…
Speaker: Christophe Ritzenthaler (University of Rennes 1 and University Côte d’Azur)
Title: Fun with Curves
ABSTRACT: In 1985, Jean-Pierre Serre gave a series of lectures at Harvard about the maximal number of
rational points on curves over finite fields. In my talk, I will tell about the motivations to study such
problem and, through 3 snapshots, show recent research directions.
Date and Time: Wednesday, September 22, 2021 (31 Shahrivar 1400)
16:30 - 17:30 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=TnhBUllnQlkwYXR4OWMxOHpjUSsyUT09
Meeting ID: 908 611 6889
Passcode: 210810
Title: Fun with Curves
ABSTRACT: In 1985, Jean-Pierre Serre gave a series of lectures at Harvard about the maximal number of
rational points on curves over finite fields. In my talk, I will tell about the motivations to study such
problem and, through 3 snapshots, show recent research directions.
Date and Time: Wednesday, September 22, 2021 (31 Shahrivar 1400)
16:30 - 17:30 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=TnhBUllnQlkwYXR4OWMxOHpjUSsyUT09
Meeting ID: 908 611 6889
Passcode: 210810
Zoom Video
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution…
🔔 دانشكده علوم رياضي دانشگاه صنعتي اصفهان با همكاري موسسه تحقيقاتي IASI ايتاليا و پژوهشگاه دانشهای بنیادی (IPM) برگزار می کند:
🔹مدرسه و کارگاه پاییزی بهینهسازی ترکیبیاتی
🕖زمان:
۹ تا ۱۱ آذر ۱۴۰۰ (November 30- December 2, 2021)
🟥 لینک ثبت نام:
https://english.iut.ac.ir/scopt2021#Registration
✅ شرکت در مدرسه و کارگاه رایگان ولی ثبت نام الزامی است.
🌐 اطلاعات تکمیلی در وبسایت مدرسه:
https://english.iut.ac.ir/scopt2021
پاسخگویی به سوالات از طریق نشانی:
📧 scopt2021@iut.ac.ir
➖➖➖➖➖➖
🌐 https://english.iut.ac.ir/scopt2021
↗️ https://news.1rj.ru/str/MathSci_Dept_iut
🔹مدرسه و کارگاه پاییزی بهینهسازی ترکیبیاتی
🕖زمان:
۹ تا ۱۱ آذر ۱۴۰۰ (November 30- December 2, 2021)
🟥 لینک ثبت نام:
https://english.iut.ac.ir/scopt2021#Registration
✅ شرکت در مدرسه و کارگاه رایگان ولی ثبت نام الزامی است.
🌐 اطلاعات تکمیلی در وبسایت مدرسه:
https://english.iut.ac.ir/scopt2021
پاسخگویی به سوالات از طریق نشانی:
📧 scopt2021@iut.ac.ir
➖➖➖➖➖➖
🌐 https://english.iut.ac.ir/scopt2021
↗️ https://news.1rj.ru/str/MathSci_Dept_iut
Speaker: Werner M. Seiler (Universität Kassel)
Title: Algebraic and Geometric Theory of General Systems of Differential Equations
ABSTRACT: Much of the theory of (partial) differential equations is concerned with rather special types of systems or even just individual systems. Using functional analytic techniques, deep results about very general types of solutions have been achieved.
It is much less known that with algebraic and geometric techniques one can develop a theory about general systems with basically no assumptions about their structure, leading at least to an analytic solution theory.
In this talk, we will introduce this so-called formal theory of differential equations which uses a geometric model of systems of differential equations based on jet bundles. It turns out that the hierarchy of jet bundles induces a natural polynomial structure which allows us to associate with any system of differential equations a polynomial module which can be analyzed with homological methods.This eventually culminates into the theorems of Cartan-Kuranishi and Cartan-Kähler providing the desired existence theory for analytic solutions.
Date and Time: Wednesday, Des 01, 2021 (10 Azar 1400)
17:00 - 18:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/89320417944
Meeting ID: 89320417944
Title: Algebraic and Geometric Theory of General Systems of Differential Equations
ABSTRACT: Much of the theory of (partial) differential equations is concerned with rather special types of systems or even just individual systems. Using functional analytic techniques, deep results about very general types of solutions have been achieved.
It is much less known that with algebraic and geometric techniques one can develop a theory about general systems with basically no assumptions about their structure, leading at least to an analytic solution theory.
In this talk, we will introduce this so-called formal theory of differential equations which uses a geometric model of systems of differential equations based on jet bundles. It turns out that the hierarchy of jet bundles induces a natural polynomial structure which allows us to associate with any system of differential equations a polynomial module which can be analyzed with homological methods.This eventually culminates into the theorems of Cartan-Kuranishi and Cartan-Kähler providing the desired existence theory for analytic solutions.
Date and Time: Wednesday, Des 01, 2021 (10 Azar 1400)
17:00 - 18:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/89320417944
Meeting ID: 89320417944
Zoom Video
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution…
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با سلام و احترام، فایل صوتی و تصویری وبینار سخنرانی پرو فسور ورنر ام زايلر، که روز چهار شنبه مورخ 10آذر ماه سال جاری برگزار گردید را مشاهده نمائيد.
Speaker: Masoud Kamgarpour (University of Queensland)
Title: Arithmetic Geometry of Moduli of Representations
ABSTRACT: Let Γ be a finitely generated group and G a connected reductive group. The moduli space of representations of Γ into G, also known as the character variety (or character stack), plays a central role in diverse areas of mathematics, including Geometric Langlands and non-abelian Hodge Theory. In this talk, I will explain how one goes about counting points on the moduli space over finite fields. As we shall see, salient features of complex representations theory of finite reductive groups (Deligne—Lusztig theory, etc.) comes into play.
Date and Time: Thursday, January 13, 2022 (23 Dey 1400)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
Title: Arithmetic Geometry of Moduli of Representations
ABSTRACT: Let Γ be a finitely generated group and G a connected reductive group. The moduli space of representations of Γ into G, also known as the character variety (or character stack), plays a central role in diverse areas of mathematics, including Geometric Langlands and non-abelian Hodge Theory. In this talk, I will explain how one goes about counting points on the moduli space over finite fields. As we shall see, salient features of complex representations theory of finite reductive groups (Deligne—Lusztig theory, etc.) comes into play.
Date and Time: Thursday, January 13, 2022 (23 Dey 1400)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
با سلام و احترام، شما میتوانید از طریق لینک زیر فایل صوتی و تصویری وبینار سخنرانی پروفسور مسعود کامگارپور، که در روز پنج شنبه مورخ 23دي ماه سال جاری برگزار گردید را مشاهده نمائيد.
Start Time: Jan 13, 2022 10:31 AM
Meeting Recording:
https://us06web.zoom.us/rec/share/G-F68GXoBgtPuFqb7E0DxyPqWFgwo6TvxxTdbuD0mFlYzlFgNfu_sU9cmUMmRw8l.UNed0lIIc8tsy0H9
Access Passcode: *P9B#*RE
Start Time: Jan 13, 2022 10:31 AM
Meeting Recording:
https://us06web.zoom.us/rec/share/G-F68GXoBgtPuFqb7E0DxyPqWFgwo6TvxxTdbuD0mFlYzlFgNfu_sU9cmUMmRw8l.UNed0lIIc8tsy0H9
Access Passcode: *P9B#*RE
Zoom Video Communications
Video Conferencing, Web Conferencing, Webinars, Screen Sharing
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution…
Speaker: S. Mohammad Hadi Hedayatzadeh
Institute for Research in Fundamental Sciences (IPM)
Title: An Introduction to the Langlands Program
ABSTRACT: I will talk about the Langlands Program, and if time permits, I will also talk about the main ideas of the existing proofs of the Local Langlands Correspondence in the GL_n case, and say a few words about my research in this area.
Date and Time: Wednesday, January 19, 2022 (29 Dey 1400)
16:30 - 17:30 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
Institute for Research in Fundamental Sciences (IPM)
Title: An Introduction to the Langlands Program
ABSTRACT: I will talk about the Langlands Program, and if time permits, I will also talk about the main ideas of the existing proofs of the Local Langlands Correspondence in the GL_n case, and say a few words about my research in this area.
Date and Time: Wednesday, January 19, 2022 (29 Dey 1400)
16:30 - 17:30 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
Speaker: Ivan Hal Sudborough (University of Texas)
Title: Using Permutation Rational Functions to Obtain Permutation Arrays with Large Hamming Distance
ABSTRACT: We consider permutation rational functions (PRFs), V (x)/U(x), where both V (x) and U(x) are polynomials over a finite field Fq. Permutation rational functions have been the subject of several recent papers. Let M(n, D) denote the maximum number of permutations on n symbols with pairwise Hamming distance D. Computing lower bounds for M(n, D) is the subject of current research with applications in error correcting codes. Using PRFs of specified degrees d, we obtain improved lower bounds for M(q, q − k) for prime powers q and k ∈ {5, 6, 7, 8, 9}, and for M(q + 1, q − k) for prime powers q and k ∈ {4, 5, 6, 7, 8, 9}.
Date and Time: Thursday, January 27, 2022 (7 Bahman 1400)
18:00 - 19:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
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در صورتي که جهت اتصال با زوم مشکل داشتيد ميتوانيد از طريق لينک زير وارد شويد
bbb link
https://vmeeting.ipm.ir/b/isf-q2n-prq
Title: Using Permutation Rational Functions to Obtain Permutation Arrays with Large Hamming Distance
ABSTRACT: We consider permutation rational functions (PRFs), V (x)/U(x), where both V (x) and U(x) are polynomials over a finite field Fq. Permutation rational functions have been the subject of several recent papers. Let M(n, D) denote the maximum number of permutations on n symbols with pairwise Hamming distance D. Computing lower bounds for M(n, D) is the subject of current research with applications in error correcting codes. Using PRFs of specified degrees d, we obtain improved lower bounds for M(q, q − k) for prime powers q and k ∈ {5, 6, 7, 8, 9}, and for M(q + 1, q − k) for prime powers q and k ∈ {4, 5, 6, 7, 8, 9}.
Date and Time: Thursday, January 27, 2022 (7 Bahman 1400)
18:00 - 19:00 (Tehran local time)
Zoom Link:
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09
Meeting ID: 908 611 6889
Passcode: 362880
*********************
در صورتي که جهت اتصال با زوم مشکل داشتيد ميتوانيد از طريق لينک زير وارد شويد
bbb link
https://vmeeting.ipm.ir/b/isf-q2n-prq
Zoom
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