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Beskrivelse

Beskrivelse
English: Jerzy Różycki - Polish mathematician and cryptologist, helped decipher Enigma.
Polski: Jerzy Różycki - polski matematyk i kryptolog, pomógł odszyfrować Enigmę.
Dato 1930's-1940's
Kilde
  • Stanisław Strumph Wojtkiewicz (1978) Sekret Enigmy, Warszawa: Iskry no ISBN
  • Andrzej Świdlicki (1994/12/12). "Polskie rozbicie szyfrów Enigmy". Nowy Dziennik: 7.
Forfatter No photographer mentioned in either source

Licensering

Public domain
This photograph is in the public domain because according to the Art. 3 of copyright law of March 29, 1926 of the Republic of Poland and Art. 2 of copyright law of July 10, 1952 of the People's Republic of Poland, all photographs by Polish photographers (or published for the first time in Poland or simultaneously in Poland and abroad) published without a clear copyright notice before the law was changed on May 23, 1994 are assumed to be in the public domain in Poland.

This work is in the public domain in the United States because it meets three requirements:

  1. it was first published outside the United States (and not published in the U.S. within 30 days),
  2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
  3. it was in the public domain in its home country (Poland) on the URAA date (1 January 1996).
To uploader: Please provide where and when the image was first published.

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Jerzy Różycki

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Dato/tidMiniaturebilledeDimensionerBrugerKommentar
nuværende18. nov. 2005, 18:26Miniature af versionen fra 18. nov. 2005, 18:26568 × 760 (183 KB)Tevatron~commonswiki{{polishpd}} Category:Polish mathematicians Category:20th century mathematicians Category:Cryptography

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