higher geometry / derived geometry
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geometric little (∞,1)-toposes
geometric big (∞,1)-toposes
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The pillowcase orbifold is the 2-dimensional flat (complex) orbifold which is the global quotient of the torus by the reflection involution :
The Weierstrass elliptic function , regarded as a holomorphic function with values in the Riemann sphere , exhibits the coarse underlying topological space of the pillowcase orbifold as the 2-sphere:
(e.g Mukase 04, end of 1.4, Eskin-Okounkov 05, p. 1, Goujard-Moeller 18, 2.3)
Alex Eskin, Andrei Okounkov, Pillowcases and quasimodular forms, In: Ginzburg V. (ed.) Algebraic Geometry and Number Theory, Progress in Mathematics, vol 253. Birkhäuser 2006
Elise Goujard, Martin Moeller, Pillowcase covers: Counting Feynman-like graphs associated with quadratic differentials (arXiv:1809.05016)
Created on July 28, 2020 at 15:58:17. See the history of this page for a list of all contributions to it.