Dominic Joyce 
Theory of Generalized Donaldson-Thomas Invariants [PDF ebook] 

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This book studies generalized Donaldson-Thomas invariants$/bar{DT}{}^/alpha(/tau)$. They are rational numbers which ‘count’ both $/tau$-stable and $/tau$-semistable coherent sheaves with Chern character $/alpha$ on $X$; strictly $/tau$-semistable sheaves must be counted with complicated rational weights. The $/bar{DT}{}^/alpha(/tau)$ are defined for all classes $/alpha$, and are equal to $DT^/alpha(/tau)$ when it is defined. They are unchanged under deformations of $X$, and transf...

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Format PDF ● Pages 199 ● ISBN 9780821887523 ● Publisher American Mathematical Society ● Downloadable 3 times ● Currency EUR ● ID 6582935 ● Copy protection Adobe DRM
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