keineskeins
Keineskeins is a term used in theoretical knot theory to denote a hypothetical class of skein-like relations defined by a prohibition on certain crossing changes. The name combines the German kein, meaning “no,” with skein, invoking the standard local-relations that relate different knot diagrams. In this sense, keineskeins refers to a constrained approach to skein theory rather than to a single concrete formula.
The core idea behind keineskeins is to modify the usual skein framework by restricting which crossings may
History and reception of the notion are informal. Keineskeins has appeared in online discussions and in a
See also: skein relation, skein module, knot theory, link invariant.