![Philipp Ludwig von Seidel](https://upload.wikimedia.org/wikipedia/commons/0/09/Philipp_Ludwig_von_Seidel.jpg)
Philipp Ludwig von Seidel (; 24 October 1821 in
Zweibrücken
Zweibrücken (; french: Deux-Ponts, ; Palatinate German: ''Zweebrigge'', ; literally translated as "Two Bridges") is a town in Rhineland-Palatinate, Germany, on the Schwarzbach river.
Name
The name ''Zweibrücken'' means 'two bridges'; olde ...
,
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
– 13 August 1896 in
Munich
Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by popu ...
,
German Empire
The German Empire (),Herbert Tuttle wrote in September 1881 that the term "Reich" does not literally connote an empire as has been commonly assumed by English-speaking people. The term literally denotes an empire – particularly a hereditary ...
) was a German
mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems.
Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change.
History
On ...
. 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 convergence
In the mathematical field of analysis, uniform convergence is a mode of convergence of functions stronger than pointwise convergence. A sequence of functions (f_n) converges uniformly to a limiting function f on a set E if, given any arbitrarily s ...
, 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 w ...
'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 known for work on invariant theory of ternary forms (1889) and for the study of spherical trigonometry. He is also known f ...
and
Hermann Wiener
Hermann Ludwig Gustav Wiener (15 May 1857, Karlsruhe – 13 June 1939, Darmstadt) was a German mathematician.
Education and career
Hermann Wiener, whose father was the mathematician Christian Wiener, graduated from the ''Gymnasium'' in Karlsruh ...
.
The
Gauss–Seidel method
In numerical linear algebra, the Gauss–Seidel method, also known as the Liebmann method or the method of successive displacement, is an iterative method used to solve a system of linear equations. It is named after the German mathematicians Carl ...
is a useful numerical iterative method for solving linear systems.
See also
*
Seidel triangle
In mathematics, the Bernoulli numbers are a sequence of rational numbers which occur frequently in analysis. The Bernoulli numbers appear in (and can be defined by) the Taylor series expansions of the tangent and hyperbolic tangent functions, ...
References
External links
Biography University of St. Andrews
(Aien aristeuein)
, motto_lang = grc
, mottoeng = Ever to ExcelorEver to be the Best
, established =
, type = Public research university
Ancient university
, endowment ...
1821 births
1896 deaths
19th-century German mathematicians
{{Germany-mathematician-stub