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Moritz Pasch

Moritz Pasch German mathematician

German mathematician
The basics
Quick Facts
Intro German mathematician
A.K.A. Паш, Мориц
Was Mathematician Professor Educator Logician
From Germany
Type Academia Mathematics Philosophy
Gender male
Birth 8 November 1843, Wrocław, People's Republic of Poland
Death 20 September 1930, Bad Homburg vor der Höhe, Germany (aged 86 years)
Star sign ScorpioScorpio
The details

Moritz Pasch (8 November 1843, Breslau, Prussia (now Wrocław, Poland) – 20 September 1930, Bad Homburg, Germany) was a German mathematician of Jewish ancestry specializing in the foundations of geometry. He completed his Ph.D. at the University of Breslau at only 22 years of age. He taught at the University of Giessen, where he is known to have supervised 30 doctorates.

In 1882, Pasch published a book, Vorlesungen über neuere Geometrie, calling for the grounding of Euclidean geometry in more precise primitive notions and axioms, and for greater care in the deductive methods employed to develop the subject. He drew attention to a number of heretofore unnoted tacit assumptions in Euclid's Elements. He then argued that mathematical reasoning should not invoke the physical interpretation of the primitive terms, but should instead rely solely on formal manipulations justified by axioms. This book is the point of departure for:

  • Similarly concerned Italians: Peano, Mario Pieri, Alessandro Padoa
  • Hilbert's work on geometry and mathematical axiomatics in general;
  • All modern thinking about the foundations of Euclidean geometry.

Pasch is perhaps best remembered for Pasch's axiom:

Given three noncollinear points a, b, c and a line X not containing any of these points, if X includes a point between a and b, then X also includes one and only one of the following: a point between a and c, or a point between b and c.

In other words, if a line crosses one side of a triangle, that line must also cross one of the two remaining sides of the same triangle.

Selected publications


The contents of this page are sourced from Wikipedia article on 08 Mar 2020. The contents are available under the CC BY-SA 4.0 license.
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