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%feature("docstring") OT::ArchimedeanCopula
"Base class for bivariate Archimedean copulas.

Notes
-----
The bivariate Archimedean copulas are defined by:

.. math::

    C(u_1, u_2; \\\\theta) = \\\\varphi^{-1}(\\\\varphi(u_1; \\\\theta) + \\\\varphi(u_2; \\\\theta); \\\\theta)

where :math:`\\\\varphi` is the generator of the copula, a continous, strictly
decreasing and convex function from :math:`[0, 1]\\\\times \\\\theta` to
:math:`[0, \\\\infty)` such that :math:`\\\\varphi(1; \\\\theta)=0`. :math:`\\\\varphi^{-1}`
is the pseudo-inverse of the generator function defined by:

.. math::

    \\\\varphi^{-1}(t; \\\\theta) = \\\\left\\\\{
                      \\\\begin{array}{ll}
                      \\\\displaystyle \\\\varphi^{-1}(t; \\\\theta)
                          & \\\\text{ if } 0 \\\\leq t \\\\leq \\\\varphi(0; \\\\theta)\\\\\\\\
                      \\\\displaystyle 0 & \\\\text{ if } \\\\varphi(0; \\\\theta) \\\\leq t \\\\leq \\\\infty
                      \\\\end{array}
                              \\\\right.


An ArchimedeanCopula object can be used only through its derived classes:

- :class:`~openturns.AliMikhailHaqCopula`
- :class:`~openturns.ClaytonCopula`
- :class:`~openturns.FrankCopula`
- :class:`~openturns.GumbelCopula`

See also
--------
Copula"

// ---------------------------------------------------------------------

%feature("docstring") OT::ArchimedeanCopula::computeArchimedeanGenerator
"Compute the Archimedean generator :math:`\\\\varphi`.

Parameters
----------
t : float

Returns
-------
result : float
    The Archimedean generator :math:`\\\\varphi`."

// ---------------------------------------------------------------------

%feature("docstring") OT::ArchimedeanCopula::computeArchimedeanGeneratorDerivative
"Compute the derivative of the Archimedean generator.

Parameters
----------
t : float

Returns
-------
result : float
    The derivative of the Archimedean generator :math:`\\\\varphi`."

// ---------------------------------------------------------------------

%feature("docstring") OT::ArchimedeanCopula::computeArchimedeanGeneratorSecondDerivative
"Compute the seconde derivative of the Archimedean generator.

Parameters
----------
t : float

Returns
-------
result : float
    The seconde derivative of the Archimedean generator :math:`\\\\varphi`."

// ---------------------------------------------------------------------

%feature("docstring") OT::ArchimedeanCopula::computeInverseArchimedeanGenerator
"Compute the inverse of the Archimedean generator.

Parameters
----------
t : float

Returns
-------
result : float
     :math:`\\\\varphi^{-1}` the inverse of the Archimedean generator."