Перегляд за автором "Pyekhtyeryev, V."

Результати 1-3 з 3

H- and R-cross-sections of the full finite semigroup Tn

Pyekhtyeryev, V. (Algebra and Discrete Mathematics, 2003)

All H− and R− cross-sections of the full finite semigroup Tn of all transformations of the set N = {1, 2, . . . , n} are described.
H−,R−and L−cross-sections of the infinite symmetric inverse semigroup ISX

Pyekhtyeryev, V. (Algebra and Discrete Mathematics, 2005)

All H−,R− and L−cross-sections of the infinite symmetric inverse semigroup ISX are described.
Idempotent D -cross-sections of the finite inverse symmetric semigroup ISn

Pyekhtyeryev, V. (Algebra and Discrete Mathematics, 2008)

We prove that every finite poset can be embedded in some idempotent D-cross-section of the finite inverse symmetric semigroup ISn.

Результати 1-3 з 3

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