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Rationality of rationally connected threefolds admitting non-isomorphic endomorphisms
threefolds non-isomorphic endomorphisms
2010/11/12
We prove a structure theorem for non-isomorphic endomorphisms of weak Q-Fano threefolds, or more generally for threefolds with big anti-canonical divisor. Also provided is a criterion for a fibred rat...
Calabi-Yau Threefolds and Moduli of Abelian Surfaces I
Calabi-Yau Threefolds Moduli of Abelian Surfaces I
2010/10/29
We describe birational models and decide the rationality/unirationality of moduli spaces AA_{d} (and AA^{lev}_{d}) of (1,d)-polarized abelian surfaces (with canonical level structure, respectively) f...