Thomas von Randow

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Thomas von Randow (26 December 1921 Breslau, Schlesien – 29 July 2009 Hamburg) was a German mathematician and journalist who published mathematical and logical puzzles under the pseudonym Zweistein in the "Logelei" column in Die Zeit. (After 2005 his column and pseudonym were continued by Bernhard Seckinger and Immanuel Halupczok.)

<i>Die Zeit</i> German weekly newspaper

Die Zeit is a German national weekly newspaper published in Hamburg in Germany. The newspaper is generally considered to be among the German newspapers of record and is known for its long and extensive articles.



Many of his logic puzzles were published in the following books:

International Standard Book Number Unique numeric book identifier

The International Standard Book Number (ISBN) is a numeric commercial book identifier which is intended to be unique. Publishers purchase ISBNs from an affiliate of the International ISBN Agency.

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The Mathematics Genealogy Project is a web-based database for the academic genealogy of mathematicians. By 13 February 2019, it contained information on 238,725 mathematical scientists who contributed to research-level mathematics. For a typical mathematician, the project entry includes graduation year, thesis title, alma mater, doctoral advisor, and doctoral students.