نتایج جستجو برای: cocycle

تعداد نتایج: 892  

Journal: :The Quarterly Journal of Mathematics 2017

Journal: :Mediterranean Journal of Mathematics 2021

We extend the quandle cocycle invariant to oriented singular knots and links using algebraic structures called singquandles assigning weight functions at both regular crossings. This coincides with classical for knots, but provides extra information about links. The new distinguishes granny knot from square knot.

Journal: :European Journal of Combinatorics 1993

Journal: :Proceedings of the London Mathematical Society 2009

Journal: :Proceedings of the American Mathematical Society 2016

Journal: :Mathematische Zeitschrift 2019

Journal: :Ergodic Theory and Dynamical Systems 2011

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