Showing 2025Show all
2 papers · 1 filter
math.HO2025
An Episode in The Old Mathematical Intelligencer
Christoph Lamm
We tell the story of the map in the (old) Mathematical Intelligencer 4 in 1972.
math.GT2025
Multiple points of view: The simultaneous crossing number for knots with doubly transvergent diagrams
Christoph Lamm, Michael Eisermann
The simultaneous crossing number is a new knot invariant which is defined for strongly invertible knots having diagrams with two orthogonal transvergent axes of strong inversions.…