J. Koppitz

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20082025

most citedOn Relative Ranks of the Semigroup of Orientation-preserving Transformations on Infinite Chains

2 citations · 10 across the 21 of their papers we have counts for

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Showing 2025 · math.RAShow all

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math.RA2025

On certain semigroups of finite oriented and order-decreasing partial transformations

Gonca Ayık, Hayrullah Ayık, Ilinka Dimitrova +1

Let $P O RD_{n}$ be the semigroup consisting of all oriented and order-decreasing partial transformations on the finite chain $X_{n} = {1 < \dots < n}$ . Let $\mathcal{IORD}_…

math.RA2025

On certain semigroups of finite monotone and order-decreasing partial transformations

Gonca Ayık, Hayrullah Ayık, Ilinka Dimitrova +1

Let $P M D_{n}$ be the semigroup consisting of all monotone and order-decreasing partial transformations, and let $I M D_{n}$ be the subsemigroup of $\mathcal{PMD}_…