Heinrich Franz Friedrich Tietze, Date of Birth, Place of Birth, Date of Death

Heinrich Franz Friedrich Tietze

austrian mathematician

Date of Birth: 31-Aug-1880

Place of Birth: Walpersbach, Lower Austria, Austria

Date of Death: 17-Feb-1964

Profession: mathematician, university teacher

Nationality: Austria

Zodiac Sign: Virgo

Heinrich Franz Friedrich Tietze (August 31, 1880 – February 17, 1964) was an Austrian mathematician, famous for the Tietze extension theorem on functions from topological spaces to the real numbers.
He also developed the Tietze transformations for group presentations, and was the first to pose the group isomorphism problem.
Tietze's graph is also named after him; it describes the boundaries of a subdivision of the Möbius strip into six mutually-adjacent regions, found by Tietze as part of an extension of the four color theorem to non-orientable surfaces.