This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
 BUILT-IN MATHEMATICA SYMBOL

# RamanujanTauTheta

 RamanujanTauTheta[t] gives the Ramanujan tau theta function .
• Mathematical function, suitable for both symbolic and numerical manipulation.
• Apart from a sign, gives the phase of the Ramanujan L-function .
• For certain special arguments, RamanujanTauTheta automatically evaluates to exact values.
Evaluate numerically:
Plot on the real line:
Evaluate numerically:
 Out[1]=

Plot on the real line:
 Out[1]=
 Scope   (4)
Evaluate for complex arguments:
Evaluate to high precision:
The precision of the output tracks the precision of the input:
 Applications   (2)
Contour plot of the absolute value of RamanujanTauTheta:
The first 10 Gram points of RamanujanTauL:
Plot of RamanujanTauZ and Gram points:
On the critical line, RamanujanTauTheta gives the phase of RamanujanTauL up to a sign:
RamanujanTauL can be expressed in terms of RamanujanTauTheta:
Machine-number inputs can give high-precision results:
Density plot of the argument:
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