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Asst. Prof. Dr. Ekkachai Laysirikul

ผู้ช่วยศาสตราจารย์ ดร.เอกชัย หลายศิริกุล

Department of MathematicsFaculty of Science, Naresuan UniversityNaresuan University

Expertise

transformation semigroups
numerical semigroups
green's relations
regularity
cayley graphs
partial order
equivalence relations
frobenius number
idempotents
semigroup theory

PDF · A4 · Englishekkachail@nu.ac.th

Profile Publications Analytics

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Research Metrics

Publications indexed in Google Scholar; citations, h-index and i10-index counted by SciPub. Updated 29 Oct 2026.

Publications: 29
Citations: 69
h-index: 5
i10-index: 1

Research

What Dr. Ekkachai publishes and how often it is cited

Output and impact

Same figures as Analytics

Journal quartile29 papers

Q1 4
Q2 7
Q3 3
Q4 4
N/A 11

4 of the 29 papers are in Q1 journals (Scopus, else SJR). N/A: the venue has no quartile.

Citations per yearper Google Scholar

20162026 so far

These add up to 64. Citations (69) is SciPub's own count from 29 papers, so the two differ.

Most recent papers

Newest first

Cayley Graphs of Transformation Semigroups with Restriction on the Fixed Set Is Bijective
European Journal of Pure and Applied Mathematics · 2026
Q2
0 citations
Regularity and Green's relations on GFin(Γ)\rtimesG
Discussiones Mathematicae-General Algebra and Applications · 2025
Q3
0 citations
Maximal and Minimal Congruences on the Semigroup 𝑇𝐸 (𝑋)
Science & Technology Asia · 2024
Q4
1 citation

Most cited papers

By citations counted by SciPub

Semigroups of full transformations with the restriction on the fixed set is bijective
Thai Journal of Mathematics · 2016
Q4
24 citations
Natural partial order on the semigroups of partial isometries of a finite chain
Thai Journal of Mathematics · 2018
Q4
7 citations
Regularity for semigroups of transformations that preserve equivalence
JP Journal of Algebra · 2013
Q1
6 citations

See all 29 papers See full analytics

Contact

Email Dr. Ekkachai

Related researchers

Closest expertise to Dr. Ekkachai’s

Assoc. Prof. Dr. Chaiwat NamnakDepartment of MathematicsShared: transformation semigroups, numerical semigroups, green's relations
Asst. Prof. Dr. Sureeporn ChaopraknoiDepartment of MathematicsShared: transformation semigroups
Prof. Dr. Manoj SiripitukdetDepartment of MathematicsShared: green's relations, semigroup theory
Prof. Dr. Kijti RodtesDepartment of Mathematics
Dr. Limpapat BussabanDepartment of Computer Science and Information Technology