plumial.core.P._P.k

_P.k()

Calculate the k polynomial.

The k polynomial is derived from the gh transformation of the uv polynomial.

Return type:

Union[Expr, int, float]

Returns:

k polynomial or its evaluation

Examples

>>> p = P(133)
>>> p.k()  # Symbolic form
# Returns symbolic k polynomial
>>> collatz_p = P(133).encode(B.Collatz)
>>> collatz_p.k()  # Uses basis automatically
# Returns numerical value using Collatz basis