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RACK SHADOWS AND THEIR INVARIANTS
Journal article   Open access   Peer reviewed

RACK SHADOWS AND THEIR INVARIANTS

Wesley Chang and Sam Nelson
Journal of knot theory and its ramifications, v 20(9), pp 1259-1269
Sep 2011
url
http://arxiv.org/abs/0910.3002View

Abstract

Mathematics Physical Sciences Science & Technology
A rack shadow or rack set is a set X with a rack action by a rack R, analogous to a vector space over a field. We use shadow colorings of classical link diagrams to define enhanced rack counting invariants and show that the enhanced invariants are stronger than unenhanced counting invariants.

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