โ- and โ-Cross-Sections in โ๐ฎn
Olexandr Ganyushkin, Volodymyr Mazorchuk ยท Communications in Algebra ยท 2003
We classify cross-sections of the โ and โ Green's relations on the finite symmetric inverse semigroup โ๐ฎ n , determine which of them are isomorphic, and study their disposition with respect to the โ-cross-sections of โ๐ฎ n .