S. A. Choudum

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S. A. Choudum
Born1947 (age 70–71)
Alma materKarnataka University
IIT Madras
Known forGraph enumeration,
Degree sequence,
Graph coloring,
Bivariegated graph, Interconnection networks
Scientific career
FieldsGraph Theory
InstitutionsIIT Madras,
University of Mumbai,
Madurai Kamaraj University,
University of Reading
Doctoral advisorK. R. Parthasarathy

Sheshayya A. Choudum (born 1947) is a professor and a former chair of the department of mathematics at IIT Madras specializing in graph theory. He has often worked in chromatic number, degree sequence, graph enumeration, bivariegated graphs, and networks.

Choudum hails from Manvi, Raichur district, Karnataka. He completed an MSc in mathematics from Karnataka University, Dharwar and a PhD in 1975 with the dissertation "Some Analysis, Synthesis and Graph Enumeration Problems in Graph Theory" from IIT Madras. His advisor was K. R. Parthasarathy. From there, he came to the University of Mumbai to work with S. S. Shrikhande, S. B. Rao and Vasanti N. Bhat-Nayak. Prior to joining the computer science department at IIT Madras, he was with the department of mathematics of Madurai Kamaraj University. While at Madurai, he visited the University of Reading to work with Crispin Nash-Williams. Choudum has guided 10 PhD students in graph theory.


  • A First Course in Graph Theory by S.A. Choudum Macmillan, 1999 ISBN 0-333-92040-6
  • Graph Theory, by S.A. Choudum, NPTEL (IITM), India, 2011.


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