Mathematician:Augustus De Morgan

Mathematician
British mathematician and logician best known for De Morgan's laws.

Also introduced and made rigorous the Principle of Mathematical Induction. Did considerable work on the logic of relations.

Nationality
British

History

 * Born: 27 June 1806 in Madurai, Madras Presidency, British Raj (now India)
 * Died: 18 March 1871 in London, England

Theorems

 * De Morgan's Laws

Publications

 * 1836: An Explanation of the Gnomonic Projection of the Sphere
 * 1837: Elements of Trigonometry, and Trigonometrical Analysis
 * 1837: The Elements of Algebra
 * 1838: An Essay on Probabilities
 * 1840: The Elements of Arithmetic
 * 1840: First Notions of Logic, Preparatory to the Study of Geometry
 * 1840: Edited
 * 1842: The Differential and Integral Calculus
 * 1845: The Globes, Celestial and Terrestrial
 * 1847: Formal Logic or The Calculus of Inference
 * October 1848: Short Supplementary Remarks on the first six Books of  (in the Companion to the [British] Almanac, 1849)
 * 1849: Trigonometry and Double Algebra
 * 1860: Syllabus of a Proposed System of Logic
 * 1872:

Notable Quotes

 * It is easier to square the circle than to get round a mathematician.
 * -- Quoted in : They Say: What Say They? : Let Them Say


 * There never has been, and till we see it we never shall believe that there can be, a system of geometry worthy of the name, which has any material departures (we do not speak of corrections or extensions or developments) from the plan laid down by .
 * -- October 1848: Short Supplementary Remarks on the first six Books of 


 * 's writings do not convince any mathematician that their author was strongly addicted to geometry ... We know that he encouraged mathematics ... But if -- which nobody believes -- the μηδειϛ άγεωμέτρητος εἰσίτω [Let no man ignorant of geometry enter] of Tzetzes had been written over his gate, it would no more have indicated the geometry within than a warning not to forget to bring a packet of sandwiches would now give promise of a good dinner.
 * -- Quoted in : They Say: What Say They? : Let Them Say

Also known as
Some sources refer to him as Augustus de Morgan, that is, with a lowercase d.