Area-length duality and the characteristic 2-chain
The author presents an alternative proof for the area-length duality between the wave front of a smooth spherical curve and its characteristic 2-chain, originally given in [\textit{V. I. Arnol'd}, Russ. Math. Surv. 50, 1-68 (1995; Zbl 0848.58005)].
scientific article; zbMATH DE number 898946
scientific article