gives the Ramanujan tau Z-function .


  • Mathematical function, suitable for both symbolic and numerical manipulation.
  • , where is the Ramanujan tau theta function, and is the Ramanujan tau L-function.
  • For certain special arguments, RamanujanTauZ automatically evaluates to exact values.
  • RamanujanTauZ can be evaluated to arbitrary numerical precision.
  • RamanujanTauZ automatically threads over lists.


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Basic Examples  (2)

Evaluate numerically:

Plot over a subset of the reals:

Scope  (12)

Numerical Evaluation  (4)

Evaluate numerically:

Evaluate to high precision:

The precision of the output tracks the precision of the input:

Complex number inputs:

Evaluate efficiently at high precision:

Specific Values  (3)

Value at zero:

RamanujanTauZ evaluates to exact values for certain special arguments:

Find the first positive maximum of RamanujanTauZ[x]:

Visualization  (2)

Plot the RamanujanTauZ:

Plot the real part of the RamanujanTauZ function:

Plot the imaginary part of the RamanujanTauZ function:

Function Properties  (3)

RamanujanTauZ is defined for all real values:

Complex domain:

Approximate function range of RamanujanTauZ:

RamanujanTauZ threads over lists:

Applications  (2)

Plot of the absolute value of RamanujanTauZ:

Find a numerical root:

Properties & Relations  (2)

On the critical line, RamanujanTauZ is the modulus of RamanujanTauL up to a sign:

RamanujanTauZ can be expressed in terms of RamanujanTauL and RamanujanTauTheta:

Evaluate derivatives numerically:

Introduced in 2007