Henryk Zygalski (Polish pronunciation: [ˈxɛnrɨk zɨˈɡalski] ; 15 July 1908 – 30 August 1978) was a Polish mathematician and cryptologist who worked at...

Enigma machines. The Zygalski-sheet apparatus takes its name from Polish Cipher Bureau mathematician–cryptologist Henryk Zygalski, who invented it about...

Rejewski and fellow mathematician-cryptologists Jerzy Różycki and Henryk Zygalski, working at the Polish General Staff's Cipher Bureau, developed techniques...

By 1938 Rejewski had invented a device, the cryptologic bomb, and Henryk Zygalski had devised his sheets, to make the cipher-breaking more efficient...

course to be Bureau staff members: Marian Rejewski, Jerzy Różycki and Henryk Zygalski. In 1926, the German Navy adopted, as its top cryptographic device...

of German Enigma-machine ciphers by cryptologists Marian Rejewski, Henryk Zygalski, and Jerzy Różycki. An extensive Polish intelligence network also proved...

was aided by fellow mathematician-cryptologists Jerzy Różycki and Henryk Zygalski, both of whom had been recruited with Rejewski from Poznań University...

pioneer of physical education in Poland Henryk Niewodniczański (1900–1968), Polish physicist Henryk Zygalski (1908–1978), Polish mathematician and cryptologist...

army officer Tadeusz Lisicki (who knew Rejewski and his colleague Henryk Zygalski in wartime Britain but was never associated with the Cipher Bureau)...

reality, the Polish cryptanalysts Marian Rejewski, Jerzy Różycki and Henryk Zygalski from the Polish Cipher Bureau had been breaking German Enigma messages...