Philipp Ludwig von Seidel (; 24 October 1821 in

Biography

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
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, 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 ...

– 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, ...

, 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 ...

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 ...

. 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 ...

'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 ...

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 triangleReferences

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