Doubly slice knot

A knot is doubly slice when it is the equatorial cross-section of an unknotted smooth two-sphere in

S^{4}

.

Table of contents
- Double slice genus Doubly slice knot

Double slice genus ( $g_{d s} (K)$ )

The double slice genus is the smallest genus of an unknotted closed orientable surface in

S^{4}

whose transverse equatorial cross-section is

K

.

 Ancestors (6)

 Incoming links (2)

Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 112 / 3 / a / Solution
Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 112 / 3 / c / Solution

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