Raosaheb Dinanath Atmaram Dalvi (1844 – 10 February 1897) was an Indian judge and amateur mathematician. His father Atmaram Bapu Dalvi was a
social reformer
A reform movement or reformism is a type of social movement that aims to bring a social or also a political system closer to the community's ideal. A reform movement is distinguished from more radical social movements such as revolutionary move ...
and was Vice President of the Bombay
Arya Samaj
Arya Samaj ( hi, आर्य समाज, lit=Noble Society, ) is a monotheistic Indian Hindu reform movement that promotes values and practices based on the belief in the infallible authority of the Vedas. The samaj was founded by the sanny ...
in 1880. He obtained his
BA degree
Bachelor of arts (BA or AB; from the Latin ', ', or ') is a bachelor's degree awarded for an undergraduate program in the arts, or, in some cases, other disciplines. A Bachelor of Arts degree course is generally completed in three or four years ...
in 1865 from
Elphinstone College
Elphinstone College is one of the constituent colleges of Dr. Homi Bhabha State University, a state cluster university. Established in 1823, it is one of the oldest colleges in Mumbai. It played a major role in shaping and developing the ed ...
in
Bombay
Mumbai (, ; also known as Bombay — the official name until 1995) is the capital city of the Indian state of Maharashtra and the ''de facto'' financial centre of India. According to the United Nations, as of 2018, Mumbai is the second- ...
. He was then selected as Senior Scholar and later obtained
MA degree
A Master of Arts ( la, Magister Artium or ''Artium Magister''; abbreviated MA, M.A., AM, or A.M.) is the holder of a master's degree awarded by universities in many countries. The degree is usually contrasted with that of Master of Science. Tho ...
from Elphinstone College in 1866. He then obtained his
LLB degree in 1868 and was a Senior
Dakshina Fellow in 1868. He was made Fellow of
Bombay University
The University of Mumbai is a collegiate, state-owned, public research university in Mumbai.
The University of Mumbai is one of the largest universities in the world. , the university had 711 affiliated colleges. Ratan Tata is the appointed ...
in 1882–83.
In 1869 he wrote a book titled ''"An Examination of Sir Isaac Newton's Rule for finding the Number of Imaginary Square Roots in an Equation"''. He was Examiner for first Examination in Arts, Analytic Trigonometry, Arithmetic, and Algebra at
Bombay University
The University of Mumbai is a collegiate, state-owned, public research university in Mumbai.
The University of Mumbai is one of the largest universities in the world. , the university had 711 affiliated colleges. Ratan Tata is the appointed ...
along with James Burgess who later on became Director General of
Archaeological Survey of India
The Archaeological Survey of India (ASI) is an Indian government agency that is responsible for archaeological research and the conservation and preservation of cultural historical monuments in the country. It was founded in 1861 by Alexande ...
and Assistant Governor of Bombay. He was appointed as a sub-judge in Bombay Presidency in 1873 and served in
Junnar
Junnar (Marathi pronunciation: ͡ʒunːəɾ is a city in the Pune district of the Indian state of Maharashtra. The city has history dating back to the first millennium. The nearby fort of Shivneri was the birthplace of Maratha king Chatrapa ...
as a Second Class Subordinate Judge in 1876. He then became a sub-judge in 1883 at
Akola
Akola () is a municipal corporation and the third largest city in Vidarbha after Nagpur and Amravati and tenth largest city in Maharashtra. is located about east of the state capital, Mumbai, and west of the second capital, Nagpur. Akola ...
in
Ahmednagar district
Ahmednagar district (Marathi pronunciation: Help:IPA/Marathi, ɦ(ə)məd̪nəɡəɾ is the largest districts of Maharashtra, district of Maharashtra state in western India. The historical Ahmednagar city is the headquarters of the district. ...
, in 1885 at
Nevasa
Nevasa is a city in Nevasa tehsil of Ahmednagar district in the Indian state of Maharashtra. Old name of this place are Nidhinivas, Nivas and Mahalaya Also town of lord Kuber.
Sant Dnyaneshwar Temple is main temple.
This place is near of Prav ...
in Ahmednagar district, in 1888 at
Satana, Erandol in Jalgaon District. In 1892, he was Subordinate Judge of Kada, Karjat in
Ahmednagar District
Ahmednagar district (Marathi pronunciation: Help:IPA/Marathi, ɦ(ə)məd̪nəɡəɾ is the largest districts of Maharashtra, district of Maharashtra state in western India. The historical Ahmednagar city is the headquarters of the district. ...
and in 1895, he was Subordinate Judge in
Parner
Parner, is a historic town in Ahmednagar District, Maharashtra, India. It is the headquarters town for Parner Taluka. Parner was named after Rishi Parashar, whose son Maharishi Ved Vyas wrote famous epic ''"Mahabharat"''.
Geography
The town ...
.
Helena Blavatsky
Helena Petrovna Blavatsky, uk, Олена Петрівна Блаватська, Olena Petrivna Blavatska (; – 8 May 1891), often known as Madame Blavatsky, was a Russian mystic and author who co-founded the Theosophical Society in 187 ...
in her Book - ''"
From the Caves and Jungles of Hindustan"'' has quoted him as possibly the greatest mathematical genius in the world. She has quoted that according to Sir James Braithwaite Peile, Director of National Education in India, Dalvi proved that the great Newton was mistaken from the beginning to the end in his ''"Rule for Imaginary Square roots"'' and the application of this Newtonian rule does not bring about the intended result. Sir James Braithwaite Peile also reported that D. A Dalvi blew the theorems of Professor James J Sylvester, one of the greatest English mathematicians, into smithereens. He wrote on Aryan Trigonometry and published in the Theosophist Part 1 1879-1880 how the Ancient Indian Trigonometrical rule for finding sine of an angle long antedates Hipparchus and Hindus before the beginning of the Christian Era, were in possession of the supposed recent trigonometrical discoveries of Euler.
He married Shanta Dalvi () and had 2 daughters namely Hira and Putala Dalvi and a son Madhusudan. D. Dalvi. His son M. D. Dalvi sailed for England in 1912 and returned to Bombay in 1920 after obtaining AMIES from the Institution of Engineers and Shipbuilders, Glasgow. He later became Chief Officer of Poona City Municipality in 1940 following which he was appointed as Chief Engineer by the Last Nawab of Junagadh in the erstwhile Princely State of Junagadh at a time when Sir Shahnawaz Bhutto was the Dewan. His sister Hira Dalvi married Justice SS Patkar Pusine Judge, later Acting Chief Justice of the Bombay High Court.
References
{{DEFAULTSORT:Dalvi, Dinanath Atmaram
1844 births
1897 deaths
Indian judges
Amateur mathematicians
Elphinstone College alumni