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math.GT2021
The algebraic topology of 4-manifolds multisections
Delphine Moussard, Trenton Schirmer
A multisection of a 4-manifold is a decomposition into 1-handlebodies intersecting pairwise along 3-dimensional handlebodies or along a central closed surface; this generalizes the…
math.GT2021
Slice genus, -genus and -dimensional clasp number
Delphine Moussard
The -genus of a knot is the minimal number of borromean-type triple points on a normal singular disk with no clasp bounded by the knot; it is an upper bound for the slice genus.…