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Examples of $1$-Calabi-Yau triangulated categories

+ 3 like - 0 dislike
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Can you give me examples of $1$-Calabi-Yau triangulated categories $D$ different from the bounded derived category of coherent sheaves on an elliptic curve? I would like moreover the numerical Grothendieck group of $D$ to be of rank $2$ (by numerical Grothendieck group i mean the Grothendieck group modulo the pairing $$X(A,B)= \sum_i (-1)^i{\rm dim} \ {\rm Hom}_{D}(A,B[i])$$). Thank you.

This post imported from StackExchange MathOverflow at 2016-09-04 15:23 (UTC), posted by SE-user user97971
asked Sep 2, 2016 in Theoretical Physics by user97971 (15 points) [ no revision ]

2 Answers

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Finite type ones are even classified!

https://arxiv.org/abs/math/0612141

This post imported from StackExchange MathOverflow at 2016-09-04 15:23 (UTC), posted by SE-user Fernando Muro
answered Sep 3, 2016 by Fernando Muro (20 points) [ no revision ]
+ 1 like - 0 dislike

There are some results about that question in the works of Roosmalen (http://arxiv.org/pdf/math/0703457.pdf)

He states that the only other example is given by the finite dimensional representations of k[[t]].

EDIT: This is for Abelian 1-Calabi-Yau categories, not exactly the question.

This post imported from StackExchange MathOverflow at 2016-09-04 15:23 (UTC), posted by SE-user F. C.
answered Sep 2, 2016 by F. C. (10 points) [ no revision ]

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