A~symplectic groupoid of triangular bilinear forms and the braid group

A. I. Bondal

Izvestiya. Mathematics , Tome 68 (2004) no. 4, pp. 659-708.

Résumé

We construct a symplectic groupoid of triangular bilinear forms and establish a relation with the flag variety. We also study the induced Poisson structure and the centre of the corresponding algebroid.

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