001
Fixed Points of a Random Permutation
随机排列的不动点
A video-sourced mathematical note presented in three forms: a close English reproduction, a corrected English report, and a revised Chinese report.
Recreational & semi-formal writings
Small works,
carefully kept.
Notes, reconstructions, and mathematical diversions by K. Ritsuka.
Browse the collectionThe collection
Writings
Complete texts, source files, and editorial context.
About the name
Opuscula
Opusculum is Latin for a small work; opuscula is its plural. The name suits pieces that may be modest in extent without being casual in their preparation.
Every entry preserves its sources and distinguishes reproduction, translation, and revision wherever those differences matter.