cherubino

Slice knots: knot theory in dimension 4 – Paula Truöl (ETH Zürich)

Knot theory is a subarea of low-dimensional topology – the study of smooth manifolds of dimension 4 or less. Classical knots are smooth embeddings of the (oriented) circle S^1 into R^3 (or into the 3-sphere), usually studied up to an equivalence relation called ambient isotopy.…

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