Donaldson-Thomas invariant
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English
[edit]Etymology
[edit]Introduced in 1998 by Simon Donaldson and Richard Thomas.
Noun
[edit]Donaldson-Thomas invariant (plural Donaldson-Thomas invariants)
- (algebraic geometry) Given a compact moduli space of sheaves on a Calabi-Yau threefold, its Donaldson-Thomas invariant is the virtual number of its points, i.e., the integral of the cohomology class 1 against the virtual fundamental class.