Countries
Institutions
Fields
Rankings
Compare

Search institutions, scholars, countries and publications

Sankore

Named after the University of Sankore in Timbuktu — one of the world’s oldest centres of learning. Every figure here is computed from work-level records in our own graph, never copied from a source’s summary count.

Built from

OpenAlex — works, authorships, subject classification
ROR — institutional identity
ORCID — researcher identity
Crossref — publisher confirmation

Browse

Countries
Institutions
Fields
Rankings
What we cover

Coverage is partial and says so. A country appears with its research output only once its works have been swept; until then the portal shows whatever the graph happens to hold for it and labels it as exactly that.

Digital Lefschetz numbers and related fixed point theorems

2022Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A MatemáticasJournal

10.1007/s13398-022-01318-1 Full text0 citations

Authors

3 authors across 3 institutions in 3 countries.

Muhammad Sirajo AbdullahiFirst author
- Usmanu Danfodiyo University (NG)
Poom KumamCorresponding
- Usmanu Danfodiyo University (NG)
P. Christopher StaeckerSenior author

Fields

Assignment is probabilistic — a work belongs to several fields in proportions.

Digital Image Processing Techniqueslevel 3 · 1.00
Topological and Geometric Data Analysislevel 3 · 0.99
Medical Image Segmentation Techniqueslevel 3 · 0.99

Sources

Several sources describing one work is the point — it means the record rests on more than one authority.

openalexseen September 9, 2026
2022 · Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas · 0 citations
https://openalex.org/W4294300638

Digital Lefschetz numbers and related fixed point theorems · Sankore