Siddani Bhaskara Rao is a graph theorist,

Professor Emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

, and director of the

Indian Statistical Institute Indian Statistical Institute (ISI) is a higher education and research institute which is recognized as an Institute of National Importance by the 1959 act of the Indian parliament. It grew out of the Statistical Laboratory set up by Prasanta C ...

(ISI) in

Calcutta Kolkata (, or , ; also known as Calcutta , List of renamed places in India#West Bengal, the official name until 2001) is the Capital city, capital of the Indian States and union territories of India, state of West Bengal, on the eastern ba ...

. Rao is the first director of the CR Rao Advanced Institute of Mathematics, Statistics and Computer Science. S. B. Rao is known for his work on line graphs,

frequency partition In graph theory, a discipline within mathematics, the frequency partition of a graph ( simple graph) is a partition of its vertices grouped by their degree. For example, the degree sequence of the left-hand graph below is (3, 3, 3, 2, 2, 1) and it ...

s and

degree sequence In graph theory, the degree (or valency) of a vertex of a graph is the number of edges that are incident to the vertex; in a multigraph, a loop contributes 2 to a vertex's degree, for the two ends of the edge. The degree of a vertex v is denoted ...

s. Rao hails from

Andhra Pradesh Andhra Pradesh (, abbr. AP) is a state in the south-eastern coastal region of India. It is the seventh-largest state by area covering an area of and tenth-most populous state with 49,386,799 inhabitants. It is bordered by Telangana to the ...

and completed his M.A. (1965) in mathematics from

Andhra University Andhra University (IAST: ''Āndhra Vișvakalāpariṣhat'') is a public university located in Visakhapatnam, Andhra Pradesh, India. It was established in 1926. History King Vikram Deo Verma, the Maharaja of Jeypore was one of the biggest do ...

. He received his Ph.D. (1971) from the Indian Statistical Institute,

under the supervision of renowned Statistician

CR Rao Calyampudi Radhakrishna Rao FRS (born 10 September 1920), commonly known as C. R. Rao, is an Indian-American mathematician and statistician. He is currently professor emeritus at Pennsylvania State University and Research Professor at the Un ...

. After completing his Ph.D., he moved to the

University of Mumbai The University of Mumbai is a collegiate university, collegiate, State university (India), state-owned, Public university, public research university in Mumbai. The University of Mumbai is one of the largest universities in the world. , the un ...

to work with

S. S. Shrikhande Sharadchandra Shankar Shrikhande (19 October 1917 – 21 April 2020) was an Indian mathematician with notable achievements in combinatorial mathematics. He was notable for his breakthrough work along with R. C. Bose and E. T. Parker in their di ...

. At the same time, he visited

King's College, Aberdeen King's College in Old Aberdeen, Scotland, the full title of which is The University and King's College of Aberdeen (''Collegium Regium Abredonense''), is a formerly independent university founded in 1495 and now an integral part of the Universi ...

to work with Crispin St. J. A. Nash-Williams. From the University of Mumbai, Rao went back to the Indian Statistical Institute (ISI). While at ISI, he visited

Ohio State University The Ohio State University, commonly called Ohio State or OSU, is a public land-grant research university in Columbus, Ohio. A member of the University System of Ohio, it has been ranked by major institutional rankings among the best publ ...

. Rao has guided students for their Ph.D.s in graph theory. He was the director of ISI Calcutta from 1995 to 2000. After retirement from ISI, he went to University of Hyderabad to work as the first director of the C. R. Rao Advanced Institute of Mathematics, Statistics and Computer Science,

Hyderabad Hyderabad ( ; , ) is the capital and largest city of the Indian state of Telangana and the ''de jure'' capital of Andhra Pradesh. It occupies on the Deccan Plateau along the banks of the Musi River (India), Musi River, in the northern part ...

References

Living people Graph theorists 1943 births Alumni of the University of Aberdeen Andhra University alumni Indian combinatorialists {{India-academic-bio-stub