Forwarded from IPMMath
فراخوان طرح های پژوهشی سال 1401 در پژوهشکده ریاضیات تا ۱۰ بهمن تمدید شد.
جهت ثبت طرح پژوهشی وارد پورتال پژوهشی پژوهشکده به آدرس ذیل شوید:
http://portal.math.ipm.ir
جهت ثبت طرح پژوهشی وارد پورتال پژوهشی پژوهشکده به آدرس ذیل شوید:
http://portal.math.ipm.ir
ياد آوري سخنراني فردا 👇🏻👇🏻👇🏻👇🏻👇🏻
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
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
*****
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
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فراخوان بهمن ماه 1400 دوره پسادکتری در پژوهشکده ریاضیات، اطلاعات بیشتر در لینک ذیل: http://math.ipm.ac.ir/Postdoc
کارگاه بین المللی ترکیبیات حدی
28-29ارديبهشت ماه 1401
شعبه اصفهان پژوهشکده ریاضیات
.http://portal.math.ipm.ir/PagesEvents/DisEventsHome.aspx?esbu=51da509b-c4a1-431b-b9cd-1e77632260cb
28-29ارديبهشت ماه 1401
شعبه اصفهان پژوهشکده ریاضیات
.http://portal.math.ipm.ir/PagesEvents/DisEventsHome.aspx?esbu=51da509b-c4a1-431b-b9cd-1e77632260cb
Forwarded from IPM-Isfahan
Speaker: Mohammad Shahryari (Sultan Qaboos University)
Title: Logical Generation of Groups
Date and Time: Thursday, August 04, 2022 (13 Mordad 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/92424915361?pwd=OHpPclMwcTV4Skt5SUFTM3Q2eVdQUT09
Meeting ID: 924 2491 5361
Passcode: 623781
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Title: Logical Generation of Groups
Date and Time: Thursday, August 04, 2022 (13 Mordad 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/92424915361?pwd=OHpPclMwcTV4Skt5SUFTM3Q2eVdQUT09
Meeting ID: 924 2491 5361
Passcode: 623781
***
Forwarded from IPM-Isfahan
Speaker: Leyli Jafari Taghvastani (University of Rostock)
Title: Subgroup growth and orbit growth of groups
Date and Time: Thursday, September 15, 2022 (24 Shahrivar 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/95377977443?pwd=b0tDb1NLV2twdFZLOGppV3BlZFJEQT09
Meeting ID: 953 7797 7443
Passcode: 967370
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Title: Subgroup growth and orbit growth of groups
Date and Time: Thursday, September 15, 2022 (24 Shahrivar 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/95377977443?pwd=b0tDb1NLV2twdFZLOGppV3BlZFJEQT09
Meeting ID: 953 7797 7443
Passcode: 967370
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Forwarded from IPM-Isfahan
Speaker: Stefan Kohl (GAP Support Team)
Title: A group theoretic equivalent of the Collatz conjecture
Date and Time: Tuesday, September 13, 2022 (22 Shahrivar 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/9042179424?pwd=aGEwZUczSGROdHVUc0RpdDFDSzdxdz09
Meeting ID: 904 217 9424
Passcode: 076334
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Title: A group theoretic equivalent of the Collatz conjecture
Date and Time: Tuesday, September 13, 2022 (22 Shahrivar 1401)
11:00 - 12:00 (Tehran local time)
Zoom Link:
https://zoom.us/j/9042179424?pwd=aGEwZUczSGROdHVUc0RpdDFDSzdxdz09
Meeting ID: 904 217 9424
Passcode: 076334
***
Forwarded from IPM-Isfahan
Speaker: Sajjad Lakzian
Isfahan University of Technology
Title: Harmonic Mappings and Minimal Surfaces in the Singular Setting
ABSTRACT: In this talk, we will first discuss fundamentals of harmonic mappings and minimal surfaces in the smooth setting. We will then discuss various generalizations to the singular setting. At the end, we will review compactness theory for harmonic maps from surfaces and its application to minimal surface theory as well as some rigidity results. This is based on joint work with C. Breiner from Brown Univ.
Date and Time: Thursday, Aug 18, 2022, (27 Mordad 1401)
11:00 - 12:00 (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/98757303571?pwd=L282MVJFNHovclZTMVQ3Z0NxdGVtZz09
Meeting ID: 987 5730 3571
Passcode: 657451
Isfahan University of Technology
Title: Harmonic Mappings and Minimal Surfaces in the Singular Setting
ABSTRACT: In this talk, we will first discuss fundamentals of harmonic mappings and minimal surfaces in the smooth setting. We will then discuss various generalizations to the singular setting. At the end, we will review compactness theory for harmonic maps from surfaces and its application to minimal surface theory as well as some rigidity results. This is based on joint work with C. Breiner from Brown Univ.
Date and Time: Thursday, Aug 18, 2022, (27 Mordad 1401)
11:00 - 12:00 (Tehran local time)
Join Zoom Meeting
https://zoom.us/j/98757303571?pwd=L282MVJFNHovclZTMVQ3Z0NxdGVtZz09
Meeting ID: 987 5730 3571
Passcode: 657451