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Navin Madhavprasad Singhi (born 1949) is an Indian mathematician and a professor at Tata Institute of Fundamental Research Mumbai, specializing in combinatorics and graph theory. He is the recipient of the prestigious Shanti Swarup Bhatnagar Prize for Science and Technology. Singhi wrote two papers with Paul Erdős, giving him an Erdős number of 1. Singhi is known for his research in block designs, projective planes, line graphs, and coding theory.
Early life 
Singhi was born in Indore and raised in Goregaon, Mumbai and earned a M.A. in mathematics from the University of Mumbai.
Singhi earned a Ph.D. (1974) from the same University, his advisor was S. S. Shrikhande. Professor Singhi is a Fellow of the Indian National Science Academy.
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