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20212026
most citedA quadratic estimation for the Kühnel conjecture on embeddings

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math.GT2026

Linking invariants of spatial graphs

E. Alkin, Yu. Khromin, A. Skopenkov

We recall definitions of linking numbers and Wu--Simon numbers for spatial graphs. We expose a `converse' to the Conway--Gordon--Sachs theorem (i.e. description of linking function…

math.HO2026

The winding number of a closed curve around a point

E. Alkin, A. Miroshnikov, A. Skopenkov

In this expository note we present an elementary direct rigorous definition and the simplest properties of the winding number. This definition is simpler than the one given in some…