
THE HITCHIN FIBRATION Here X is a smooth connected projective
... morphisms Tot(D−1 |U) → ). The latter is not an abelian sheaf, but observe that the basic characters χ1 , . . . , χr identify cD with the OX -module ⊕ri=1 Dei . In particular, its set of global sections can be identified with ⊕ri=1 H0 (X, Di ). Although there is no obvious vector space structure on ...
... morphisms Tot(D−1 |U) → ). The latter is not an abelian sheaf, but observe that the basic characters χ1 , . . . , χr identify cD with the OX -module ⊕ri=1 Dei . In particular, its set of global sections can be identified with ⊕ri=1 H0 (X, Di ). Although there is no obvious vector space structure on ...
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... consists of the central (A, A)-bimodules X, those for which ax = xa for all a and x. Example 9. Graded version of BR has γ defined with a sign. Leads to differential graded version. Topological version in brave new algebra. BR and other examples arise from anchored bicategories by neglect of structu ...
... consists of the central (A, A)-bimodules X, those for which ax = xa for all a and x. Example 9. Graded version of BR has γ defined with a sign. Leads to differential graded version. Topological version in brave new algebra. BR and other examples arise from anchored bicategories by neglect of structu ...