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On the Ranks of Semigroup of Order-preserving or Order-reversing Partial Contraction Mappings on a Finite Chain

Autor: Ali, B., Jada, M. A., Zubairu, M. M.

Let $\mathcal{CP}_n$ be the semigroup of partial contraction mappings on $[n]=\{1,2,\ldots,n\}$ and let $\mathcal{OCP}_n$ and $\mathcal{ORCP}_n$ be its subsemigroups consisting of all order-preserving and of all order-preserving or order-reversing, p

Externí odkaz: http://arxiv.org/abs/2206.15299

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On certain Semigroup of Order-decreasing Full Contraction Mappings of a Finite Chain

Autor: Zubairu, M. M., Umar, A., Aliyu, J. A.

Let $\mathcal{CT}_n$ be the semigroup of full contraction mappings on $[n]=\{1,2,\ldots,n\}$, and let $\mathcal{OCT}_n$ and $\mathcal{ODCT}_n$ be the subsemigroups consisting of all order-preserving full contraction and subsemigroup of order-decreasi

Externí odkaz: http://arxiv.org/abs/2204.07427

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On certain semigroups of full contractions of a finite chain

Autor: Umar, A., Zubairu, M. M.

Let $[n]=\{1,2,\ldots,n\}$ be a finite chain and let $\mathcal{T}_{n}$ be the semigroup of full transformations on $[n]$. Let $\mathcal{CT}_{n}=\{\alpha\in \mathcal{T}_{n}: (for ~all~x,y\in [n])~\left|x\alpha-y\alpha\right|\leq\left|x-y\right|\}$, th

Externí odkaz: http://arxiv.org/abs/1804.10057

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On certain semigroups of partial contractions of a finite chain

Autor: Umar, A., Zubairu, M. M.

Let $[n]=\{1,2,\ldots,n\}$ be a finite chain and let $\mathcal{P}_{n}$ be the semigroup of partial transformations on $[n]$. Let $\mathcal{CP}_{n}=\{\alpha\in \mathcal{P}_{n}: (for ~all~x,y\in Dom~\alpha)~|x\alpha-y\alpha|\leq|x-y|\}$ be the subsemig

Externí odkaz: http://arxiv.org/abs/1803.02604

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Regularity and Green's relations for the semigroup of partial contractions of a finite chain

Autor: Ali, B., Umar, A., Zubairu, M. M.

Let $[n]=\{1,2,\ldots,n\}$ be a finite chain and let $\mathcal{P}_{n}$ be the semigroup of partial transformations on $[n]$. Let $\mathcal{CP}_{n}=\{\alpha\in \mathcal{P}_{n}: (for~all ~x,y\in Dom~\alpha)~|x\alpha-y\alpha|\leq|x-y|\}$, then $\mathcal

Externí odkaz: http://arxiv.org/abs/1803.02146

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Photoperiodic-dependent Morpho-biometric changes in the Excurrent Duct System of Sexually Mature Helmeted Guinea Fowl (Numida meleagris)

Autor: Atabo, S.M., Zubairu, M., Muazu, T.A., Baso, A., Umar, M.B., Sulaiman, M.H., Gosomji, I.J., Omirinde, J.O.

Publikováno v: Sahel Journal of Veterinary Sciences; Vol. 19 No. 3 (2022); 28-36

Photoperiod is considered to be one of the most effective environmental factors controlling the reproductive cycle and gonadal maturation in some mammalian species. However, very limited information is available on its effects on reproductive biology

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=78975075580c::57d84ce3908ec38d5d8224a6471ed3b3
https://www.ajol.info/index.php/sjvs/article/view/240129

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Effects of photoperiodism on the histomorphometry of the thyroid gland of the African giant rat (Cricetomys gambianus)

Autor: Zubairu, M., Ali, M.N., Umosen, A.D., Muazu, T.A., Baso, A., Atabo, S.M., Usman, M.D.

Publikováno v: Sahel Journal of Veterinary Sciences; Vol. 18 No. 4 (2021); 7-13

The effects of photoperiodism on the histomorphometry of the thyroid gland of African giant rats (AGR) waa investigated. A total of 30 captive AGR of both sexes were randomly divided into 3 different photoperiodic groups of 10 rats each (5 males and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=78975075580c::b61655d34ec904f0bc7042bdc78cc0a4
https://www.ajol.info/index.php/sjvs/article/view/228428

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