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Function

jInvariant ( seq(elt-fld^rea) L ) -> elt-fld^com

Description

The value of the modular j-function for the lattice L = [a,b], defined by j([a,b]) = j(tau) where tau is a/b or b/a, whichever is in the upper half plane.

Built: Mon Nov 14 21:12:39 UTC 2005 on mack
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