. "Ernst Zermelo"@en . . "1871Z"^^ . . . "Zermelo, Ernst"@en . . "1953Z"^^ . "German mathematician" . . "1871-07-27Z"^^ . . . . "Ernst Friedrich Ferdinand Zermelo (German: [\u02A6\u025Br\u02C8me\u02D0lo]; 27 July 1871 \u2013 21 May 1953) was a German logician and mathematician, whose work has major implications for the foundations of mathematics. He is known for his role in developing Zermelo\u2013Fraenkel axiomatic set theory and his proof of the well-ordering theorem."@en . . "1953-05-21Z"^^ . . . . . . .