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Philipp Ludwig von Seidel (; 24 October 1821 in
Zweibrücken Zweibrücken (; french: Deux-Ponts, ; Palatinate German language, Palatinate German: ''Zweebrigge'', ; literally translated as "Two Bridges") is a town in Rhineland-Palatinate, Germany, on the Schwarzbach (Blies), Schwarzbach river. Name The ...
,
Germany ) , image_map = , map_caption = , map_width = 250px , capital = Berlin Berlin (; ) is the Capital city, capital and List of cities in Germany by population, largest city of Germany by both area and population. Its 3,769,495 inh ...

Germany
– 13 August 1896 in
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by population, third-largest city in Germany, ...

Munich
,
German Empire The German Empire or the Imperial State of Germany,, officially '.Herbert Tuttle Herbert Tuttle (1846–1894) was an American historian. Biography Herbert Tuttle was born in Bennington, Vermont Bennington is a New England town, town ...
) was a
German German(s) may refer to: Common uses * of or related to Germany * Germans, Germanic ethnic group, citizens of Germany or people of German ancestry * For citizens of Germany, see also German nationality law * German language The German la ...

German
mathematician A mathematician is someone who uses an extensive knowledge of mathematics Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces ...

mathematician
. He was the son of Julie Reinhold and Justus Christian Felix Seidel. Lakatos credits von Seidel with discovering, in 1847, the crucial analytic concept of
uniform convergenceIn the mathematical field of analysis, uniform convergence is a mode Mode ( la, modus meaning "manner, tune, measure, due measure, rhythm, melody") may refer to: Language * Grammatical mode or grammatical mood, a category of verbal inflections t ...
, while analyzing an incorrect proof of
Cauchy Baron Augustin-Louis Cauchy (; ; 21 August 178923 May 1857) was a French mathematician, engineer, and physicist who made pioneering contributions to several branches of mathematics, including mathematical analysis and continuum mechanics. He was ...

Cauchy
's. In 1857, von Seidel decomposed the first order monochromatic aberrations into five constituent aberrations. They are now commonly referred to as the five Seidel Aberrations. The lunar crater Seidel is named after him. His doctoral students include
Eduard Study Eduard Study, more properly Christian Hugo Eduard Study (March 23, 1862 – January 6, 1930), was a German mathematician A mathematician is someone who uses an extensive knowledge of mathematics Mathematics (from Ancient Greek, Greek: ) inc ...

Eduard Study
and Hermann Wiener. The
Gauss–Seidel method In numerical linear algebra Numerical linear algebra, sometimes called applied linear algebra, is the study of how matrix operations can be used to create algorithms, computer algorithms which Algorithmic efficiency, efficiently and accurately provi ...
is a useful numerical iterative method for solving linear systems.


See also

* Seidel triangle


References


External links


Biography
University of St. Andrews (Aien aristeuein) , motto_lang = grc , mottoeng = Ever to ExcelorEver to be the Best , established = , type = Public In public relations and communication science, publics are groups of individual people, and the public (a.k.a. the g ...
1821 births 1896 deaths 19th-century German mathematicians {{Germany-mathematician-stub