scholarly journals Exotic elliptic algebras of dimension 4

2017 ◽  
Vol 309 ◽  
pp. 558-623 ◽  
Author(s):  
Alex Chirvasitu ◽  
S. Paul Smith
Keyword(s):  
2021 ◽  
Vol 9 ◽  
Author(s):  
Alex Chirvasitu ◽  
Ryo Kanda ◽  
S. Paul Smith

Abstract The elliptic algebras in the title are connected graded $\mathbb {C}$ -algebras, denoted $Q_{n,k}(E,\tau )$ , depending on a pair of relatively prime integers $n>k\ge 1$ , an elliptic curve E and a point $\tau \in E$ . This paper examines a canonical homomorphism from $Q_{n,k}(E,\tau )$ to the twisted homogeneous coordinate ring $B(X_{n/k},\sigma ',\mathcal {L}^{\prime }_{n/k})$ on the characteristic variety $X_{n/k}$ for $Q_{n,k}(E,\tau )$ . When $X_{n/k}$ is isomorphic to $E^g$ or the symmetric power $S^gE$ , we show that the homomorphism $Q_{n,k}(E,\tau ) \to B(X_{n/k},\sigma ',\mathcal {L}^{\prime }_{n/k})$ is surjective, the relations for $B(X_{n/k},\sigma ',\mathcal {L}^{\prime }_{n/k})$ are generated in degrees $\le 3$ and the noncommutative scheme $\mathrm {Proj}_{nc}(Q_{n,k}(E,\tau ))$ has a closed subvariety that is isomorphic to $E^g$ or $S^gE$ , respectively. When $X_{n/k}=E^g$ and $\tau =0$ , the results about $B(X_{n/k},\sigma ',\mathcal {L}^{\prime }_{n/k})$ show that the morphism $\Phi _{|\mathcal {L}_{n/k}|}:E^g \to \mathbb {P}^{n-1}$ embeds $E^g$ as a projectively normal subvariety that is a scheme-theoretic intersection of quadric and cubic hypersurfaces.


1999 ◽  
Vol 32 (10) ◽  
pp. 1951-1959 ◽  
Author(s):  
Bo-Yu Hou ◽  
Liu Zhao ◽  
Xiang-Mao Ding
Keyword(s):  

1990 ◽  
Vol 23 (3) ◽  
pp. 207-214 ◽  
Author(s):  
A. V. Odesskii ◽  
B. L. Feigin
Keyword(s):  

1993 ◽  
Vol 27 (1) ◽  
pp. 31-38 ◽  
Author(s):  
A. V. Odesskii ◽  
B. L. Feigin
Keyword(s):  

Author(s):  
Brent Pym ◽  
Travis Schedler

This chapter introduces a natural non-degeneracy condition for Poisson structures, called holonomicity, which is closely related to the notion of a log symplectic form. Holonomic Poisson manifolds are privileged by the fact that their deformation spaces are as finite-dimensional as one could ever hope: the corresponding derived deformation complex is a perverse sheaf. The chapter develops some basic structural features of these manifolds, highlighting the role played by the divergence of Hamiltonian vector fields. As an application, it establishes the deformation invariance of certain families of Poisson manifolds defined by Feigin and Odesskii, along with the ‘elliptic algebras’ that quantize them.


2016 ◽  
Vol 57 (11) ◽  
pp. 112302 ◽  
Author(s):  
Peter Koroteev ◽  
Antonio Sciarappa

1993 ◽  
Vol 118 (1) ◽  
pp. 1-21 ◽  
Author(s):  
C. Farsi ◽  
N. Watling
Keyword(s):  

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