sympy/sympy — pull request #2377 by dpsanders (2013-08-11 14:15:43+00:00)
Title: Change latex output of Lambda to use \mapsto

Modifies Lambda's latex output to use the mathematical notation \mapsto

Example:
f = Lambda(x, x^2)
f

should use the mathematical notation $x \mapsto x^2$,
instead of $Lambda(x, x^2)$.

Modified the relevant tests too.