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A Functorial Map from Knots in Thickened Surfaces to Classical Knots and Generalisations of Parity
Functorial Map Thickened Surfaces Classical Knots
2010/11/24
We construct a functorial map from knots in thickened surfaces to classical knots. This method uses a natural generalisation of the notion of parity: we localise the information about non-triviality ...