שלחו לחבר

# Automorphisms of Weyl Algebra and Conjecture of Kontsevich

Speaker
Alexei Kanel-Belov, Bar-Ilan University
Date
24/03/2019 - 13:00 - 12:00
Place
Department Seminar Room 216/201
Abstract

The famous Jacobian Conjecture states that locally invertible polynomial mapping over \${\mathbb C}\$ is globally invertible. Dixmier conjecture says that any endomorphism of the ring of differential operators (Weil algebra \$A_n\$),  is an automorphism. In the paper A. Ya. Kanel-Belov and M. L. Kontsevich, "The Jacobian conjecture is stably equivalent to the Dixmier conjecture", Mosc. Math. J., 7:2 (2007), 209-218, arXiv: math0512171. we constructed a homomorphism between the automorphism semigroup of \$A_n\$ and polynomial symplectomorphisms of \${\mathbb C}^{2n}\$. Kontsevich Conjecture states that this homomorphism is an isomorphism of invertible mappings.

In fact,  Kontsevich's Conjecture states that deformation quantization of affine space preserves the group of symplectic polynomial automorphisms, i.e. the group of polynomial symplectomorphisms in dimension \$2n\$ is canonically isomorphic to the group of automorphisms of the corresponding \$n\$-th Weyl algebra. The conjecture is confirmed for \$n=1\$ and open for \$n>1\$. We play with Plank constants and use singularity trick to confirm the general case of the conjecture, see Alexei Kanel-Belov, Andrey Elishev, Jie-Tai Yu, Augmented Polynomial Symplectomorphisms and Quantization, 2018  , 21 pp., arXiv: 1812.02859.

תאריך עדכון אחרון : 18/03/2019