**Udita Narayana Singh**attended schools in Benares. After graduating he studied at Queens College, Benares. In 1937 he married Kamala Devi: they had four children, two sons and two daughters. He graduated from Queens College, Benares in 1939 with the Gold Medal and entered the University of Allahabad. He was awarded his D.Phil. in 1949 for his thesis

*Strong Summability of Trigonometric Series*. His thesis was examined by Edward Titchmarsh.

After the award of his D.Phil., Singh went to France were he studied at the Sorbonne advised by Szolem Mandelbrojt. In 1954 he was awarded a D.Sc. for his thesis *Transformée de Fourier Généralisée et les Problèmes qui s'y Rattachent* Ⓣ. Returning to India he taught at Allahabad for a while before moving to the Aligarh Muslim University as a Reader in Mathematics. He continued to imporove his status and was appointed to the Maharaja Sayaji Rao University of Baroda as the first Professor and Head of the Mathematics Department in 1958.

Singh spent one academic year (1963-64) at the University of Illinois at Urbana-Champaign. In 1969, U N Singh was invited to join the University of Delhi as Professor of Pure Mathematics and he was pleased to accept. In 1970 be became Head of the Department of Mathematics as well as the Dean of the Faculty of Mathematics. In 1974 he was appointed the Pro-Vice Chancellor of the University of Delhi but in 1980 he accepted the offer of Vice Chancellorship of the University of Allahabad.

We have given a simple overview of Udita Narayana Singh's career, but a detailed account is given in [1]. We have a version of Singh's biography, extracted from [1], available at THIS LINK.

**Article by:** *J J O'Connor* and *E F Robertson*