Seminars in 2017/18
Speaker: Felipe Yukihide Yasumura, State University of Campinas (Brazil) and Memorial University
Time/Date: Wednesday, April 11, 2018 at 1pm
Room: HH-3017
Title: Do polynomial identities distinguish simple algebras? Part (II)
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Speaker: Alexander Bihlo, Memorial University of Newfoundland
Date/Time: Thursday, April 5, 2018 at 1pm
Room: HH-3017
Title: Exactly conservative discretization schemes for dynamical systems
Abstract:
In this talk I will introduce a method for finding exactly conservative discretization schemes for systems of ordinary differential equations. The method is constructive and applicable to any system of ordinary differential equations that has at least one first integral. I will illustrate the method with examples from various fields of the mathematical sciences, including a Lotka-Volterra system, the conservative Lorenz-1963 model, and the solar system. This is joint work with Andy Wan and JeanChristophe Nave at McGill University.
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Speaker: Felipe Yukihide Yasumura, State University of Campinas (Brazil)
Time/Date: Wednesday, April 4, 2018 at 2pm
Room: HH-3017
Title: Do polynomial identities distinguish simple algebras?
Abstract:
An interesting question is if polynomial identities can uniquely determine an algebra. Some works were dedicated to studying this, and it turns out that the best-known theorem is due to Razmyslov. In parallel, the graded version of the problem also attracted the attention of some researchers. In this seminar, we discuss the question and present the main results obtained until now. We show that the graded version is a particular case of Razmyslov’s theory. This is a joint work with Professor Yuri Bahturin (Memorial University of Newfoundland).
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Speaker: Alexander Bihlo, Memorial University
Date/Time: Wednesday, March 28, 2018 at 1pm
Room: HH-3017
Title: Invariant discretization beyond finite differences
Abstract:
In this talk I will introduce a method for constructing discretization schemes that preserve the invariance group of a system of differential equations. Traditionally, such methods were applied within the framework of finite difference methods only. I will discuss possible ways of constructing invariant discretization schemes also for other discretization methodologies, including finite elements and meshless methods.
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Speaker: Yiqiang Zhou, Memorial University of Newfoundland
Date/Time: Wednesday, March 14, 2018 at 2pm
Room: HH-3017
Title: An embedding theorem on triangular matrix rings
Abstract:
Every matrix in the triangular matrix $T_n(R)$ ring over a bleached local ring R is similar to a ‘simple form’, which is, in most cases, contained in a subring $\Omega$ of $T_n(R)$ with $\Omega$ isomorphic to a direct product of two triangular matrix rings over $R$ of smaller size. This result, called the embedding theorem, suggests a new approach for handling triangular matrix rings. It is applied to proving several results on the strong cleanness and strong 2-sum property of triangular matrix rings.
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Speaker: Mr. Caio De Naday Hornhardt, MUN
Date/Time: Wednesday, Feb 28, 2018, 1:00p.m.
Room: HH-3017
Title: Group gradings on the simple Lie superalgebras A(n, n)
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Speaker: Dr. Mikhail Kotchetov, Memorial University
Date/Time: Wednesday, Feb 14, 2018. 1:00p.m.
Room: HH-3017
Title: Lie algebras of type D4 and triality (conclusion)
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Speaker: Mikhail Kotchetov, Memorial University
Date/Time: Wednesday, January 31, 2018 at 1pm
Room: HH-3017
Title: Lie algebras of type D4 and triality (continued)
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Speaker: Dr. Mikhail Kotchetov
Date/Time: Wednesday, January 24, 1pm
Room: HH-3017
Title: Lie algebras of type D4 and triality
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Speaker: Eugene Chibrikov, Memorial University
Date/Time: 1pm, Wednesday December 13, 2017
Room: HH-3017
Title: The Algorithm for Identifying and Representing Treatment Exposure Patterns
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Speaker: Yorck Sommerhäuser, Memorial University
Date/Time: Wednesday, November 1, 2017
Room: HH-3017