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math.AG2025
Quadratic Donaldson-Thomas invariants for and some other smooth proper toric threefolds
Marc Levine, Anna M. Viergever
Using virtual localization in Witt sheaf cohomology, we show that the generating series of quadratic Donaldson-Thomas invariants of , valued in the Witt ring of $…
math.AG2023
Combing a hedgehog over a field
Alexey Ananyevskiy, Marc Levine
We investigate the question of the existence of a non-vanishing section of the tangent bundle on a smooth affine quadric hypersurface over a given perfect field . In case…
math.AG2006★ 2 cited
Algebraic cobordism revisited
M. Levine, R. Pandharipande
We define a cobordism theory in algebraic geometry based on normal crossing degenerations with double point singularities. The main result is the equivalence of double point cobord…