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Author Message
Richard Oudkerk
Posted: Sat Dec 20, 2003 8:22 am
Guest
At http://functions.wolfram.com/EllipticFunctions/ModularLambda/02/ on
the mathematica website, the following formula is given for the
elliptic modular function lambda where q = e^{\pi i z}:

lambda(z) = 16q \prod_{k \ge 1} ( \frac{1+q^{2k}}{1+q^{2k-1}} )^8

Does anybody know a reference for this formula (or where I should look
for one)?

Any help appreciated,

Richard.
 
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