Sheshayya A. Choudum was a professor and a former chair of the department of mathematics at IIT Madras. He has often worked in chromatic numbers, degree sequences, graph enumeration, and bivariegated graphs.
Books
• A First Course in Graph Theory by S.A. Choudum Macmillan, 1999 • Graph Theory, by S.A. Choudum, NPTEL (IITM), India, 2011. ==References==