Seminar talk, 29 October 2025: Difference between revisions
Created page with "{{Talk | speaker = Georgy Sharygin | title = Van den Berg double Poisson brackets on finite-dimensional algebras | abstract = One of the basic principles of algebraic noncommutative geometry is the condition proposed by Kontsevich and Rosenberg that a "geometric" structure on a noncommutative algebra A should generate a similar ordinary, "commutative" structure on its representation spaces <math>Rep_d(A)=Hom(A,Mat_d(k))</math>. The concept of "double Poisson brackets" wa..." |
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| title = Van den Berg double Poisson brackets on finite-dimensional algebras | | title = Van den Berg double Poisson brackets on finite-dimensional algebras | ||
| abstract = One of the basic principles of algebraic noncommutative geometry is the condition proposed by Kontsevich and Rosenberg that a "geometric" structure on a noncommutative algebra A should generate a similar ordinary, "commutative" structure on its representation spaces <math>Rep_d(A)=Hom(A,Mat_d(k))</math>. The concept of "double Poisson brackets" was introduced by van den Berg (and almost simultaneously, in a slightly modified form, by Crowley-Bovey) in 2008 as an answer to the question of which noncommutative structures correspond to Poisson brackets on representation spaces. The resulting construction turned out to be quite rich and interesting, however, the vast majority of examples of such structures now deal with algebras A that are (close to being) free. In my talk, based on a joint work with my master's student A. Hernandez-Rodriguez, I will describe some simple examples of how such structures look on finite-dimensional algebras. | | abstract = One of the basic principles of algebraic noncommutative geometry is the condition proposed by Kontsevich and Rosenberg that a "geometric" structure on a noncommutative algebra A should generate a similar ordinary, "commutative" structure on its representation spaces <math>Rep_d(A)=Hom(A,Mat_d(k))</math>. The concept of "double Poisson brackets" was introduced by van den Berg (and almost simultaneously, in a slightly modified form, by Crowley-Bovey) in 2008 as an answer to the question of which noncommutative structures correspond to Poisson brackets on representation spaces. The resulting construction turned out to be quite rich and interesting, however, the vast majority of examples of such structures now deal with algebras A that are (close to being) free. In my talk, based on a joint work with my master's student A. Hernandez-Rodriguez, I will describe some simple examples of how such structures look on finite-dimensional algebras. | ||
| video = | | video = https://video.gdeq.org/GDEq-zoom-seminar-20251029-Georgy_Sharygin.mp4 | ||
| slides = | | slides = | ||
| references = | | references = | ||
| 79YY-MM-DD = 7974-89-70 | | 79YY-MM-DD = 7974-89-70 | ||
}} | }} | ||
Latest revision as of 20:58, 29 October 2025
Speaker: Georgy Sharygin
Title: Van den Berg double Poisson brackets on finite-dimensional algebras
Abstract:
One of the basic principles of algebraic noncommutative geometry is the condition proposed by Kontsevich and Rosenberg that a "geometric" structure on a noncommutative algebra A should generate a similar ordinary, "commutative" structure on its representation spaces . The concept of "double Poisson brackets" was introduced by van den Berg (and almost simultaneously, in a slightly modified form, by Crowley-Bovey) in 2008 as an answer to the question of which noncommutative structures correspond to Poisson brackets on representation spaces. The resulting construction turned out to be quite rich and interesting, however, the vast majority of examples of such structures now deal with algebras A that are (close to being) free. In my talk, based on a joint work with my master's student A. Hernandez-Rodriguez, I will describe some simple examples of how such structures look on finite-dimensional algebras.
Video