Mathukumalli V. Subbarao

Mathukumalli (Matukumalli) Venkata Subbarao (Telugu: మతుకుమల్లి వెంకట సుబ్బారావు; May 4, 1921 – February 15, 2006) was an Indian mathematician, specialising in number theory. He was a long-time resident of Edmonton, Canada.

Subbarao was born in the small village of Yazali, near Bapatla, Guntur district, Andhra Pradesh, India. He received his master's degree from Presidency College, Madras in 1941. He went on to complete a doctorate in functional analysis, advised by Ramaswamy S. Vaidyanathaswamy. He worked at Presidency College, Madras, Sri Venkateswara University, and the University of Missouri, before moving in 1963 to the University of Alberta, where he spent the rest of his professional career.

In the 1960s Subbarao began to study the congruence properties of the partition function, which became one of his favourite problems. He also researched special classes of divisors and the corresponding analogues of divisor functions and perfect numbers, such as those arising from the exponential divisors ("e-divisors") which he defined. Many other mathematicians have published papers building on his work in these subjects.

A prolific collaborator, Subbarao has Erdős number 1, and more than 40 joint authors. He continued producing mathematics papers into the final years of his life. He died in Edmonton at the age of 84.

Selected publications

• Straus, E. G.; Subbarao, M. V. (1974). "On exponential divisors". Duke Mathematical Journal 41 (2): 465–471. doi:10.1215/S0012-7094-74-04152-0. 

References

• Balasubramanian, R. (April 10, 2006). "Matukumalli Venkata Subbarao" (PDF). Current Science (Bangalore: Current Science Association) 90 (7): 1011. ISSN 00113891. http://www.ias.ac.in/currsci/apr102006/1011.pdf. Retrieved January 5, 2007. 

External links

• Mathukumalli V. Subbarao at the Mathematics Genealogy Project.

Persondata
Name	Subbarao, Mathukumalli Venkata
Alternative names	Subbarao, Matukumalli Venkata
Short description	Mathematician
Date of birth	May 4, 1921
Place of birth	Guntur district, Andhra Pradesh, India
Date of death	February 15, 2006
Place of death	Edmonton, Alberta, Canada