(self)
return self.is_only_above_fermi
Always create a quasi-particle?  (create hole or create particle)

        >>> from sympy import Symbol
        >>> from sympy.physics.secondquant import Fd
        >>> a = Symbol('a', above_fermi=True)
        >>> i = Symbol('i', below_fermi=True)
        >>> p = Symbol('p')

        >>> Fd(a).is_only_q_creator
        True
        >>> Fd(i).is_only_q_creator
        False
        >>> Fd(p).is_only_q_creator
        False
Always create a quasi-particle?  (create hole or create particle)
Always create a quasi - particle? ( create hole or create particle )
def is_only_q_creator(self):
        """
        Always create a quasi-particle?  (create hole or create particle)

        >>> from sympy import Symbol
        >>> from sympy.physics.secondquant import Fd
        >>> a = Symbol('a', above_fermi=True)
        >>> i = Symbol('i', below_fermi=True)
        >>> p = Symbol('p')

        >>> Fd(a).is_only_q_creator
        True
        >>> Fd(i).is_only_q_creator
        False
        >>> Fd(p).is_only_q_creator
        False

        """
        return self.is_only_above_fermi
def is_only_q_creator ( self ) : return self . is_only_above_fermi