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Walther von Dyck
Walther Von Dyck.jpg
8th Rector of the Technical University of Munich
In office
1919–1925
Preceded by Karl Heinrich Hager [de]
Succeeded by Jonathan Zenneck
1st Rector of the Technical University of Munich
In office
1903–1906
Preceded by Position renamed
Succeeded by Friedrich von Thiersch
7th Director of the Technical University of Munich
In office
1900–1903
Preceded by Egbert von Hoyer [de]
Succeeded by Position renamed
Personal details
Born (1856-12-06)6 December 1856
Munich, Kingdom of Bavaria
Died 5 November 1934(1934-11-05) (aged 77)
Munich, Nazi Germany
Nationality German
Education Technical University of Munich
Scientific career
Fields Mathematics
Thesis Über regulär verzweigte Riemannsche Flächen und die durch sie definierten Irrationalitäten (1879)
Doctoral advisor Felix Klein

Walther Franz Anton von Dyck (born December 6, 1856 – died November 5, 1934) was an important German mathematician. He was born with the name Dyck, but later received a special honor that added "von" to his name.

Walther von Dyck is famous for being the first to clearly define what a mathematical group is, in the way we understand it today. A group is a set of things with a way to combine them, like numbers with addition, that follows certain rules. He also helped create a field of math called combinatorial group theory. This is where mathematicians study groups by looking at their basic building blocks and how they relate to each other.

Who Was Walther von Dyck?

Grabstaette Walther von Dyck
A bust of Walther von Dyck at his grave in Munich.

Walther von Dyck was a student of another famous mathematician, Felix Klein. He worked with Klein on a big project, helping to publish Klein's encyclopedia, which was a huge collection of mathematical knowledge.

Von Dyck also helped edit the writings of Johannes Kepler, a very important astronomer and mathematician from long ago. He was a strong supporter of teaching about technology and engineering. He served as the leader, called a rector, of the Technical University of Munich (which was then called the Technische Hochschule of Munich) multiple times.

Family Background

Walther von Dyck was the son of a Bavarian painter named Hermann Dyck.

What Is His Legacy?

Walther von Dyck's work left a lasting mark on mathematics. Several important ideas and concepts are named after him:

  • The Dyck language is used in computer science and formal language theory. It helps describe certain types of sequences, like balanced parentheses.
  • Dyck's theorem and Dyck's surface are concepts used in the study of surfaces in mathematics.
  • The von Dyck groups, Dyck tessellations, Dyck paths, and the Dyck graph are all mathematical ideas that carry his name.

These names show how much his ideas influenced different areas of mathematics.

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