3 papers
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.…
math.GT2024
The enumeration of doubly symmetric diagrams for strongly positive amphicheiral knots
Christoph Lamm
This is the second part of the article on doubly symmetric diagrams and strongly positive amphicheiral knots. We develop an enumeration strategy for prime knots given by doubly sym…