Professor Abdullahi Umar

Geciteerd door

	Alles	Sinds 2019
Citaties	817	321
h-index	16	10
i10-index	21	11

100

199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320249 5 4 4 3 1 10 17 9 10 6 23 7 21 52 50 68 39 44 27 21 49 28 41 59 93 74 24

Openbare toegang

Alles bekijken

1 artikel

0 artikelen

beschikbaar

niet beschikbaar

Op basis van financieringsmachtigingen

Medeauteurs

Fatma Al-KharousiSultan Qaboos UniversityGeverifieerd e-mailadres voor squ.edu.om
Rotimi KehindeDoctor of Philosophy in mathematics, Federal University Lokoja, Kogi State Nigeria.Geverifieerd e-mailadres voor fulokoja.edu.ng
Muhammad Mansur ZubairuBayero University KanoGeverifieerd e-mailadres voor buk.edu.ng
Bashir AliBayero University KanoGeverifieerd e-mailadres voor buk.edu.ng
ADEDIRAN DAUDA ADESHOLADepartment of Mathematics and Statistics, Kwara State UniversityGeverifieerd e-mailadres voor kwasu.edu.ng
Alan J. CainGeverifieerd e-mailadres voor fct.unl.pt
Peter M. HigginsProfessor of Mathematics, Dept of Mathematical Sciences, University of EssexGeverifieerd e-mailadres voor essex.ac.uk
Ganna KudryavtsevaReseacher, Institute Jozef StefanGeverifieerd e-mailadres voor ijs.si
Mike DeadmanProfessor of Crop Sciences, Sultan Qaboos UniversityGeverifieerd e-mailadres voor squ.edu.om
Alexander BursteinProfessor of Mathematics, Howard UniversityGeverifieerd e-mailadres voor howard.edu
Ziyad ALSharawiAmerican University of SharjahGeverifieerd e-mailadres voor aus.edu
Rajai AlassarKing Fahd University of Petroleum & MineralsGeverifieerd e-mailadres voor kfupm.edu.sa
Balarabe YushauATBU, Bauchi, Nigeria

Volgen

Professor Abdullahi Umar

Department of Mathematics, Khalifa University of Science and

Geverifieerd e-mailadres voor ku.ac.ae

Algebraic Semigroup Theory Magic squares cubes calendars...


Titel Sorteren op citaties Sorteren op jaar Sorteren op titel	Geciteerd door Geciteerd door	Jaar
On the semigroups of order-decreasing finite full transformations A Umar Proceedings of the Royal Society of Edinburgh Section A: Mathematics 120 (1 …, 1992	127	1992
Combinatorial results for semigroups of order-preserving partial transformations A Laradji, A Umar Journal of Algebra 278 (1), 342-359, 2004	67	2004
Combinatorial results for semigroups of order-preserving full transformations A Laradji, A Umar Semigroup Forum 72, 51-62, 2006	62	2006
On certain finite semigroups of order-decreasing transformations I A Laradji, A Umar Semigroup Forum 69, 184-200, 2004	56	2004
On the semigroups of partial one-to-one order-decreasing finite transformations A Umar Proceedings of the Royal Society of Edinburgh Section A: Mathematics 123 (2 …, 1993	51	1993
On the number of nilpotents in the partial symmetric semigroup A Laradji, A Umar Communications in Algebra 32 (8), 3017-3023, 2004	30	2004
On the ranks of certain finite semigroups of order-decreasing transformations A Umar Portugaliae Mathematica 53 (1), 23-34, 1996	30	1996
Combinatorial results for semigroups of order-decreasing partial transformations A Laradji, A Umar J. Integer Seq 7 (3), 2004	28	2004
Combinatorial results for the symmetric inverse semigroup A Laradji, A Umar Semigroup Forum 75, 221-236, 2007	27	2007
Combinatorial results for certain semigroups of order-preserving full contraction mappings of a finite chain AD Adeshola, A Umar JCMCC 106, 37-49, 2018	25*	2018
On the semigroup of partial isometries of a finite chain F Al-Kharousi, R Kehinde, A Umar Communications in Algebra 44 (2), 639-647, 2016	25	2016
Some combinatorial problems in the theory of symmetric inverse semigroups A Umar Algebra and Discrete Mathematics, 2010	25	2010
Semigroups of order-decreasing transformations: the isomorphism theorem A Umar Semigroup Forum 53 (2), 220-224, 1996	24	1996
On certain infinite semigroups of order-decreasing transformations I A Umar Communications in Algebra 25 (9), 2987-2999, 1997	23	1997
Some combinatorial problems in the theory of partial transformation semigroups A Umar Algebra and discrete mathematics, 110-135, 2014	20	2014
Semigroups of order-decreasing transformations A Umar University of St Andrews, 1992	19	1992
Combinatorial results for certain semigroups of partial isometries of a finite chain. F Al-Kharousi, R Kehinde, A Umar Australas. J Comb. 58, 365-375, 2014	16	2014
A class of quasi-adequate transformation semigroups A Umar Portugaliae Mathematica 51 (4), 553-570, 1994	16	1994
Enumeration of certain finite semigroups of transformations A Umar Discrete mathematics 189 (1-3), 291-297, 1998	13	1998
On certain semigroups of full contractions of a finite chain A Umar, MM Zubairu arXiv preprint arXiv:1804.10057, 2018	10	2018

Het systeem kan de bewerking nu niet uitvoeren. Probeer het later opnieuw.

Artikelen 1–20

Citaties per jaar

Dubbele citaties

Samengevoegde citaties

Medeauteurs toevoegenMedeauteurs

Volgen

Geciteerd door

Medeauteurs