__init__(self, *vars): 

@classmethod
scalar(cls, v): 

@classmethod
log(cls, v, base=None): 

@classmethod
exp(cls, v, base=None): 

@classmethod
cos(cls, x): 

@classmethod
sin(cls, x): 

@classmethod
morse(cls, r, de=1, a=1, re=0):