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Dive into the research topics where Abdullahi Umar is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Projects
- 1 Finished
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FSU-2019-07: Optimal Distribution of Vaccine to Control Diseases: HPV Vaccine as an Example
Umar, A. (CoI) & Al Arydah, M. (PI)
31/03/19 → 31/03/21
Project: Research
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COMBINATORIAL RESULTS FOR ORDER-PRESERVING PARTIAL INJECTIVE CONTRACTION MAPPINGS
Ahmed, B. M., Aldhamri, N., Al-Kharousi, F., Klein, G. & Umar, A., 2024, In: Contributions to Discrete Mathematics. 19, 2, p. 1-19 19 p.Research output: Contribution to journal › Article › peer-review
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On Certain Semigroups of Order-Decreasing Full Contraction Mappings of a Finite Chain
Zubairu, M. M., Umar, A. & Aliyu, J. A., 2024, Trends in Mathematics. Springer Science and Business Media Deutschland GmbH, p. 35-45 11 p. (Trends in Mathematics; vol. Part F2326).Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review
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Some Combinatorial Results for Partial and Full Symmetric Semigroups
Al-Kharousi, F., Alnadabi, W. & Umar, A., 2024, Trends in Mathematics. Springer Science and Business Media Deutschland GmbH, p. 107-118 12 p. (Trends in Mathematics; vol. Part F2326).Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review
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On dominions of certain ample monoids
Nasir, S. & Umar, A., 30 May 2023, In: Acta et Commentationes Universitatis Tartuensis de Mathematica. 27, 1, p. 17-28 12 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Regularity and Green's relations for the semigroups of partial and full contractions of a finite chain
Ali, B., Umar, A. & Zubairu, M. M., Sep 2023, In: Scientific African. 21, e01890.Research output: Contribution to journal › Article › peer-review
Open Access