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math.AG2001
Orbifold quantum cohomology of the classifying space of a finite group
Tyler J. Jarvis, Takashi Kimura
We work through, in detail, the orbifold quantum cohomology, with gravitational descendants, of the stack BG, the point modulo trivial action of a finite group G. We provide a simp…
math.AG2001
Moduli of twisted spin curves
Dan Abramovich, Tyler J. Jarvis
In this note we give a new, natural construction of a compactification of the stack of smooth r-spin curves, which we call the stack of stable twisted -spin curves. This stack i…