Abdullahi Umar - Concepedia

Author

Abdullahi Umar

King Fahd University of Petroleum and Minerals ORCID

Also Known As

A M Umar, A Umar, A. T. Umar, A. UMAR, A. Umar, AMINU MALAM YAKUBU UMAR, Abdul Rahman Umar, Abdullahi B Umar, Abdullahi UMAR, Abdullahi Umar

132

Publications

540

Citations

H-Index

Concepts

All Affiliations

King Fahd University of Petroleum and Minerals University of Abuja University of St Andrews

About

Abdullahi Umar is an author at King Fahd University of Petroleum and Minerals specializing in functional analysis, spectral theory, and engineering.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Functional Analysis	4	4	141
2	Engineering	2	2	87
3	Spectral Theory	2	2	87
4	Geometric Group Theory	1	1	26
5	Representation Theory	1	1	16

Abdullahi Umar

Publications

331

Citations

H-Index

Page 1

	Year	Citations
On the semigroups of order-decreasing finite full transformations Abdullahi Umar Proceedings of the Royal Society of Edinburgh Section A Mathematics Spectral TheoryTopological SemigroupsEngineeringFull Transformation SemigroupOrdered Group	1992	61
Combinatorial Results for Semigroups of Order-PreservingFull Transformations A. Laradji, Abdullahi Umar Semigroup Forum	2006	44
Combinatorial results for semigroups of order-preserving partial transformations A. Laradji, Abdullahi Umar Journal of Algebra Topological SemigroupsCombinatorial ResultsTransformation SemigroupsPartially Ordered Set	2004	35
On Certain Finite Semigroups of Order-decreasing Transformations I A. Laradji, Abdullahi Umar Semigroup Forum Topological SemigroupsOrdered GroupCertain Finite SemigroupsTransformation SemigroupsFunctional Analysis	2004	32
On the semigroups of partial one-to-one order-decreasing finite transformations Abdullahi Umar Proceedings of the Royal Society of Edinburgh Section A Mathematics Spectral TheoryTopological SemigroupsGeometric Group TheoryEngineeringSymmetric Inverse Semigroup	1993	26
On the Semigroup of Partial Isometries of a Finite Chain F. Al-Kharousi, Rotimi Kehinde, Abdullahi Umar Communications in Algebra Topological SemigroupsSymmetric Inverse SemigroupOrdered GroupFinite ChainTransformation Semigroups	2015	22
Urinary sodium excretion and its association with blood pressure in Nigeria: A nationwide population survey Augustine N. Odili, Babangida S. Chori, Benjamin Danladi, Journal of Clinical Hypertension	2020	19
Semigroups of Order-decreasing Transformations: The Isomorphism Theorem Abdullahi Umar Semigroup Forum Isomorphism TheoremTransformation SemigroupsTopological SemigroupsOrdered Group	1996	17
On the Number of Nilpotents in the Partial Symmetric Semigroup A. Laradji, Abdullahi Umar Communications in Algebra Symmetric FunctionTopological SemigroupsRepresentation TheoryAlgebraic CombinatoricsPartial Symmetric Semigroup	2004	16
Development of a Low-Cost GSM-Bluetooth Home Automation System Salihu Aliyu, Abdulazeez Yusuf, Abdullahi Umar, International Journal of Intelligent Systems and Applications	2017	14

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