feynlag.parameters.InternalParameter

class feynlag.parameters.InternalParameter(name, expr=None, tex=None, real=True, positive=False, unit_dim=0)

Parameter derived from others via expr (assignable later).

Examples: μ₁₁² from a tadpole condition, λ₁ inverted from m_h and v, a mixing angle from a tan 2θ condition.

__init__(name, expr=None, tex=None, real=True, positive=False, unit_dim=0)

Methods

__init__(name[, expr, tex, real, positive, ...])
define(expr)	Assign (or reassign) the defining expression.

Attributes

nature
s	The underlying SymPy symbol (shorthand for expressions).