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Riemann created elliptic geometry in 1854.
Elliptic
A modular elliptic curve is a type of elliptic curve E that allows for the parametrization of X0(N) -> E through a modular curve.
http://www.nationmaster.com/encyclopedia/Jacobi's-elliptic-functions have a look at this
Stephen Rempel has written:
'Index theory of elliptic boundary problems' -- subject(s): Boundary value problems, Differential equations, Elliptic, Elliptic Differential equations