Srinivasa Ramanujan
22 December 1887 -26 April 1920 (aged 32) Chetput, (Madras), India
Ramanujan Number/Hardy-Ramanujan Number
- A common anecdote about Ramanujan relates to the number 1729. Hardy arrived at Ramanujan's residence in a cab numbered 1729. Hardy commented that the number 1729 seemed to be uninteresting. Ramanujan is said to have stated on the spot that it was actually a very interesting number mathematically, being the smallest natural number representable in two different ways as a sum of two cubes:1729 = 13 + 123 = 93 + 103
- 91 = 63 + (−5)3 = 43 + 33 (91 is divisor of 1729)
- Masahiko Fujiwara showed that 1729 is
- 1 + 7 + 2 + 9 = 19
- 19 × 91 = 1729
- Ramanujan Known for : Landau-Ramanujan Constant
Aryabhata
476 BC-550 BC India
Aryabhata was the first astronomer to make an attempt at measuring the Earth's circumference since Eratosthenes (circa 200 BC). Aryabhata accurately calculated the Earth's circumference as 24,835 miles, which was only 0.2% smaller than the actual value of 24,902 miles. This approximation remained the most accurate for over a thousand years.
Statue of Aryabhata on the grounds of IUCAA,Pune
Bhaskara
Bhaskara was an Indian mathematician of the 7th century
He was perhaps the first to conceive the differential coefficient and differential calculus
Euclid
Born 300 BC Egypt "Father of Geometry"
One of the oldest surviving fragments of Euclid's Elements, found at Oxyrhynchus and dated to circa AD 100
Pythagoras
Born 570 BC - 495 BC Samos Island GREEK
Pythagoras has commonly been given credit for discovering the Pythagorean theorem, a theorem in geometry that states that in a right-angled triangle the area of the square on the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares of the other two sides—that is, a2 + b2 = c2.
Hipparchos.
born in Nicaea (now Iznik, Turkey)190 BC - 120 BC
He developed trigonometry and constructed trigonometric tables, and he has solved several problems of spherical trigonometry. With his solar and lunar theories and his trigonometry, he may have been the first to develop a reliable method to predict solar eclipses. His other reputed achievements include the discovery of Earth's precession, the compilation of the first comprehensive star catalog of the western world, and possibly the invention of the astrolabe, also of the armillary sphere, which he used during the creation of much of the star catalogue
K.S.Chadrasekharan
He born in 21 November 1920 completed his high school from Bapatla village in Guntur from Andhra Pradesh. He completed his M.A. in mathematics from thePresidency College, Chennai and a Ph.D. from the Department of Mathematics, University of Madras in 1942. Fields Number Theory
Thales
c.624 BC – c. 546 BC Greece
In mathematics, Thales used geometry to solve problems such as calculating the height of pyramids and the distance of ships from the shore. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. As a result, he has been hailed as the first true mathematician and is the first known individual to whom a mathematical discovery has been attributed. Also, Thales was the first person known to have studied electricity.
John Wallis
23 November 1616 - 28 October 1703 (aged 86) England
He was an English mathematician who is given partial credit for the development ofinfinitesimal calculus. Between 1643 and 1689 he served as chief cryptographer for Parliament and, later, the royal court. He is also credited with introducing the symbol ∞ for infinity. He similarly used 
for an infinitesimal. Asteroid 31982 Johnwallis was named after him.
for an infinitesimal. Asteroid 31982 Johnwallis was named after him. Rene Des Cartes
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(31 March 1596 – 11 February 1650),
He was a French philosopher ,mathematician , scientist, and writer.
Invented Analytic Geometry
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Leonhard Paul Euler
15 April 1707 - 18 September 1783 (aged 76) Basel, Switzerland
He was a pioneering Swissmathematician and physicist. He made important discoveries in field adiverse as infinitesimal calculus and graph theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also renowned for his work in mechanics, fluid dynamics, optics, and astronomy.
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Johann Carl Friedrich Gauss
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(30 April 1777 – 23 February 1855)
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“The Prince of Mathematicians”
He was a German mathematician and scientist who contributed significantly to many fields, including number theory, statistics, analysis,differential geometry, geodesy, geophysics, electrostatics, astronomy and optics.
Brahmaguptha
Brahmagupta 598-668. The first Indian Mathematician who framed the operation of Zero. He separated Algebra and Arithmetic into two separate branches. He was the first person to calculate the length of the year. He explained that the moon’s illumination can be computed by the angle it forms to the sun
Varahamihira
Varahamihira 499-574 A.D. Indian Astronomer, Astrologer and Mathematician, Calculated the distance and positions of planets and researched galaxies. Claimed that plants and termites are the indicators of underground water
Some important trigonometric results attributed to Varahamihira
2 2
Sin x + cos x = 1
Dr.Calyampudi Radhakrishna Rao
He was born (10 September 1920) in Huvanna Hadagali, now in Karnataka State, India. In 1941 he obtained an M.A. in math from Andhra University in Waltair, Andhra Pradesh, and in 1943 an M.A. in Statistics from Calcutta University in Kolkata, West Bengal. He worked at the Indian Statistical Institute until mandatory retirement at age 60,Prof. Rao ranks among the most notable statisticians of the last half of the 20th century. He has received at least 32 honorary doctorates from universities in 18 countries, and has been honored with medals from countries worldwide, including the United States National Medal of Science. He has directly supervised more than 50 Ph.D. students who have in turn yielded more than 350 Ph.D.’s
Summary of research interests
Robust estimation in univariate and multivariate linear models: Current investigation includes a new type of estimation called Mu to cover estimates of parameters in situations where M-estimation is not applicable, such as Oja’s median.
Characterization of probability distributions: A general solution of the integrated Cauchy Functional Equation is obtained.
Matrix Algebra: Theory and applications of antieigen values.
Bootstrap: Bootstrap distributions under resampling schemes that ensure a certain number of distinct observations in each sample are being investigated.
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Shkuntaladevi -Guinness Book of world Records Indian women
Born on 4 November in 1939 at the city of Bangalore in Karnataka state India, Shakuntala Devi is an outstanding calculating prodigy of India.Shakuntala Devi is an outstanding calculating prodigy of India. she solved the multiplication of two 13-digit numbers 7,686,369,774,870 x 2,465,099,745,779 randomly picked up by the computer department of Imperial College in London. And this, she did in 28 seconds flat.
This incident has been included on the 26th page of the famous 1995 Guinness Book of Records.In the year 1977.Shakuntala Devi obtained the 23rd root of the digit number '201' mentally.For Shekuntala Devi Books click
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