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akaturk Academic measurement

Academician

HAYRULLAH AYIK

Profesör

Çukurova Üniversitesi Fen-Edebiyat Fakültesi Matematik Bölümü

  1. Ana Dal Fen Bilimleri ve Matematik Temel Alanı
  2. Yan Dal Matematik
Keywords YÖKSİS
Articles 38 YÖKSİS 38 · OpenAlex 0 Total citations 70 h-index 6 · OpenAlex OpenAlex coverage %53 matched 20 / 38 Q1 articles 1 Scopus · WoS Q1 1 Best field rank #89 / 570 Keyword · top 15.6% Co-authors 21 6 Turkish institutions

Citation impact

Citation counts of the articles matched in OpenAlex, citing publications from Crossref and the Stanford/Elsevier list. Sources are shown separately and never added up.

OpenAlex YÖKSİS articles matched in OpenAlex: 20
h-index 6 Percentile in Türkiye: 67 #575 of 1,472 at their university by h-index
i10-index
1
Total citations
70
Top 43% in Türkiye
Per article
3.5
FWCI
0.37
1.00 = world average
World top 1%
0
World top 10%
0
How is this computed?

h-index and citations are computed from the citation counts of this academic’s YÖKSİS articles matched in OpenAlex (not Google Scholar, WoS or Scopus). Unmatched articles are not included. h-index on the OpenAlex author profile: 9.

Citing publications Crossref 11 publications citing 20 DOI-bearing articles · 8 Türkiye-affiliated
  • 2019 1
  • 2020 5
  • 2021 1
  • 2022 3
  • 2025 1
  1. DOI 10.1080/00927872.2025.2590188 2025
  2. On the Rank of Generalized Transformation Semigroups TR Gonca Ayık et al. · Bulletin of the Malaysian Mathematical Sciences Society · 2022
  3. DOI 10.1007/s00233-021-10237-3 2022
  4. DOI 10.1007/s00233-022-10255-9 2022 · cites 2 articles of this academic
  5. Isolated Subsemigroups of Order-Preserving and Decreasing Transformation Semigroups TR Emrah Korkmaz et al. · Bulletin of the Malaysian Mathematical Sciences Society · 2021 · cites 3 articles of this academic
  6. On nilpotent subsemigroups of the order-preserving and decreasing transformation semigroups TR Melek Yağcı et al. · Semigroup Forum · 2020 · cites 2 articles of this academic
  7. On Elements of Finite Semigroups of Order-Preserving and Decreasing Transformations TR Melek Yağcı et al. · Bulletin of the Malaysian Mathematical Sciences Society · 2020
  8. Some Involutions which Generate the Finite Symmetric Group TR Leyla BUGAY · Mathematical Sciences and Applications E-Notes · 2020
  9. On the ranks of certain ideals of monotone contractions TR Leyla BUGAY · Hacettepe Journal of Mathematics and Statistics · 2020
  10. On Minimal Generating Sets of Certain Subsemigroups of Isometries TR Leyla BUGAY et al. · Mathematical Sciences and Applications E-Notes · 2020
  11. A general approach for generating sets of certain subsemigroups of monotone maps TR Leyla Bugay · Asian-European Journal of Mathematics · 2019 · cites 2 articles of this academic
Where does this list come from?

Extracted from the reference lists in Crossref’s public March 2026 data file; 20.3% of the file has been processed, so the list may be incomplete. Crossref citations are never added to or compared with the OpenAlex citation counts; the two sources have different coverage.

Field ranking

Position in the main-field, side-field and keyword cohorts by YÖKSİS article score; each card opens that ranking.

Works 38

YÖKSİS and OpenAlex records: index distribution, journals published in, a filterable article list and the other output types.

Indexes and citation percentiles

?
TR Index 7 articles
OpenAlex citation percentile
Top 1%0
Top 10%0
Avg · n 20 %46.6
Other counts

Scopus (SJR)

  • YÖKSİS rows 20

WoS (JCR)

  • YÖKSİS rows 20

Articles

Articles with YÖKSİS and OpenAlex source split; narrow by quartile or TR Index.

38articles

Journals with publications

7 journals

Narrow down

Scopus (SJR)
Q11 Q213 Q36 Q40
WoS (JCR)
TR Index

Article list

  1. 2026 On isolated subsemigroups of order-decreasing transformation semigroups Hacettepe Journal of Mathematics and Statistics DOI 10.15672/hujms.1632145 YÖKSİS TR Index SJR Q2 JCR Q2 OpenAlex 13.2%
  2. 2025 A presentation for the semigroup of order-preserving full contraction mappings of a finite chain Communications in Algebra DOI 10.1080/00927872.2024.2405026 YÖKSİS SJR Q2 JCR Q3 OpenAlex 16.2%
  3. 2025 On the semigroup of all injective orientation-preserving and order-decreasing partial transformations on a finite chain Communications in Algebra DOI 10.1080/00927872.2024.2448248 YÖKSİS SJR Q2 JCR Q3 OpenAlex 80.0%
  4. 2025 On the ranks of certain subsemigroups of finite orientation-preserving and order-decreasing partial transformations Semigroup Forum DOI 10.1007/s00233-024-10493-z YÖKSİS SJR Q2 JCR Q3 OpenAlex 68.8%
  5. 2025 On monoids of monotone partial transformations of a finite chain whose domains and ranges are intervals Algebra and Discrete Mathematics DOI 10.12958/adm2403 YÖKSİS SJR Q3 JCR Q4 OpenAlex 25.3%
  6. 2024 Ranks of certain semigroups of transformations with idempotent complement whose restrictions belong to a given semigroup Turkish Journal of Mathematics DOI 10.55730/1300-0098.3516 YÖKSİS TR Index SJR Q2 JCR Q2 OpenAlex 7.5%
  7. 2024 Combinatorial results for semigroups of orientation-preserving and order-decreasing transformations Semigroup Forum DOI 10.1007/s00233-024-10413-1 YÖKSİS SJR Q2 JCR Q2 OpenAlex 82.3%
  8. 2023 Ranks of Certain Semigroups of Transformations Whose Restrictions are Elements of a Given Semigroup Bulletin of the Malaysian Mathematical Sciences Society DOI 10.1007/s40840-023-01491-5 YÖKSİS SJR Q2 JCR Q1 OpenAlex 55.2%
  9. 2022 Isolated Subsemigroups of Order-Preserving and Decreasing Transformation Semigroups Bulletin of the Malaysian Mathematical Sciences Society DOI 10.1007/s40840-021-01215-7 YÖKSİS SJR Q2 JCR Q2 OpenAlex 53.0%
  10. 2021 Ranks of nilpotent subsemigroups of order-preserving and decreasing transformation semigroups TURKISH JOURNAL OF MATHEMATICS DOI 10.3906/mat-2008-19 YÖKSİS TR Index SJR Q2 JCR Q3 OpenAlex 75.6%
  11. 2019 Combinatorial Results for Semigroups of Order-Preserving and A-Decreasing Finite Transformations Bulletin of the Malaysian Mathematical Sciences Society DOI 10.1007/s40840-017-0529-1 YÖKSİS SJR Q3 JCR Q2 OpenAlex 57.1%
  12. 2019 Relative ranks of some partial transformation semigroups TURKISH JOURNAL OF MATHEMATICS DOI 10.3906/mat-1902-23 YÖKSİS TR Index SJR Q3 JCR Q3 OpenAlex 15.5%
  13. 2018 The ranks of certain semigroups of partial isometries Semigroup Forum DOI 10.1007/s00233-018-9954-1 YÖKSİS SJR Q1 JCR Q3 OpenAlex 70.0%
  14. 2018 On the rank of transformation semigroup T-(n,T-m) Turkish Journal of Mathematics DOI 10.3906/mat-1710-59 YÖKSİS TR Index SJR Q2 JCR Q3 OpenAlex 54.0%
  15. 2018 Generating sets of certain finite subsemigroups of monotone partial bijections TURKISH JOURNAL OF MATHEMATICS DOI 10.3906/mat-1710-86 YÖKSİS TR Index SJR Q2 JCR Q3 OpenAlex 15.5%
  16. 2017 Minimal relative generating sets of some partial transformation semigroups Communications in Algebra DOI 10.1080/00927872.2016.1175604 YÖKSİS SJR Q2 JCR Q4 OpenAlex 68.3%
  17. 2015 On the second homology of the Schützenberger product of monoids TURKISH JOURNAL OF MATHEMATICS DOI 10.3906/mat-1503-79 YÖKSİS TR Index SJR Q3 JCR Q4 OpenAlex 18.4%
  18. 2015 Generating Sets of Finite Transformation Semigroups K n r and PK n r Communications in Algebra DOI 10.1080/00927872.2013.847947 YÖKSİS SJR Q2 JCR Q4 OpenAlex 63.8%
  19. 2014 GENERATING SETS OF STRICTLY ORDER PRESERVING TRANSFORMATION SEMIGROUPS ON A FINITE SET Bulletin of the Korean Mathematical Society DOI 10.4134/BKMS.2014.51.4.1055 YÖKSİS SJR Q3 JCR Q4 OpenAlex 9.7%
  20. 2014 Generating Sets in Some Semigroups of Order Preserving Transformations on a Finite Set Southeast Asian Bull. Math. YÖKSİS

Books 1

  1. 1998 Presentations and Efficiency of Semigroups University of St Anderws Araştırma (Tez Hariç) Kitabı

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Collaboration network

From the author lists of YÖKSİS publication records. Duplicate records of a work count once; institutions are co-authors’ current YÖKSİS affiliations.

Co-authors
21
With an akaturk profile
10
Turkish institutions
6
Co-authored works
%95

Academic co-authors 10

  1. GONCA AYIK Profesör · Çukurova Üniversitesi same university 13
  2. LEYLA BUGAY Profesör · Çukurova Üniversitesi same university 10
  3. MELEK YAĞCI Doçent · Sinop Üniversitesi 5
  4. AYŞEGÜL DAĞDEVİREN Araştırma Görevlisi · Çukurova Üniversitesi same university 3
  5. EMRAH KORKMAZ Doktor Öğretim Üyesi · Çukurova Üniversitesi same university 3
  6. EBRU YİĞİT ÇAĞDAŞ Öğretim Görevlisi (ders Vermekle Görevli) · Yalova Üniversitesi 2
  7. KEMAL TOKER Doçent · Harran Üniversitesi 2
  8. RUKİYE SÖNMEZ Doktor Öğretim Üyesi · Çanakkale Onsekiz Mart Üniversitesi 2
  9. AYŞEGÜL GÜNEŞ Doktor Öğretim Üyesi · İstanbul Beykent Üniversitesi 1
  10. OSMAN KELEKCİ Doçent · Niğde Ömer Halisdemir Üniversitesi 1

National collaboration 6 institutions

Within own university24 joint works · Çukurova Üniversitesi

  1. Sinop Üniversitesi 5 works · 1 academics
  2. Harran Üniversitesi 2 works · 1 academics
  3. Yalova Üniversitesi 2 works · 1 academics
  4. Çanakkale Onsekiz Mart Üniversitesi 2 works · 1 academics
  5. Niğde Ömer Halisdemir Üniversitesi 1 works · 1 academics
  6. İstanbul Beykent Üniversitesi 1 works · 1 academics

Other co-authors (incl. international) 11

JOHN OCONNOR 6NIK RUSKUC 6COLİN CAMPBELL 5YUSUF ÜNLÜ 5HOWİE JOHN M 2BİLAL VATANSEVERCAMPBELL JFİKRET KUYUCUKOÇ MMOWİE JVitor H. Fernandes

Authors without an akaturk profile (international researchers, retired or former academics, students, clinicians) are grouped by name spelling; short forms such as “Gulluce M.” join the single full name they match.