Shiyali Ramamrita Ranganathan was an Indian mathematician and librarian, born August 9, 1892, in the rural village of Shiyali. His main contribution to the field of library science is the development of the first analytical-synthetic classification system, the colon classification. He is considered the father of library science in India. It came from middle class family from British India. He began his professional life as a mathematician. He obtained B.A. and M.A. degrees in mathematics at Madras Christian College in his province.

His goal was to teach mathematics, and as a teacher he published a series of articles, mostly about the history of mathematics. However, his career as an educator bumped into his stuttering problem (a difficulty he gradually overcame in his professional life). Many said he was a workaholic (workaholic). For two decades in Madras, he worked long hours 13 hours a day, seven days a week, without taking a vacation. Although getting married in November 1928, he returned to work in the afternoon after the ceremony. He had only one son with his wife, Sarana.

Years of work in Madras have been devoted to library management and classification. During this period he produced his five laws of library science (1931) and the colon classification system (1933).

The five laws are the seed of all Ranganathan practice:
* Books are for use.
* For each reader your book
* For each book your reader
* Save reader time
* The library is a growing organism

The laws seem simple at first reading, but they summarize much of what the information community still believes. Ranganathan saw these laws as the lens through which experts can decide what to do and adjust activities while remaining user-focused.