LinkingWithTrefoil

The linking number of a hyperbolic element's modular knot with the trefoil — Ghys's theorem, and the same number as RademacherSymbol.

LinkingWithTrefoil(matrix)the linking number

Typed signatures

Type	Package	Applies
(expression<ModularMatrix> | list | string) -> integer	modular	always

Domain: The modular group

Examples

Basic #

The matrix of $LR^4$; equals its Rademacher symbol

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In$\mathrm{LinkingWithTrefoil}(\mathrm{ModularMatrix}(1, 4, 1, 5))$Out$3$

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Examples	1

See also: RademacherSymbol