Ferdinand Marcos | Ferdinand Magellan | Franz Ferdinand | Ferdinand II of Aragon | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Ferdinand von Mueller | Ferdinand I, Holy Roman Emperor | Ferdinand I | Georg Solti | Ferdinand | Louis-Ferdinand Céline | Georg Philipp Telemann | Ferdinand Foch | Rio Ferdinand | Johann Georg Wagler | Georg Wilhelm Friedrich Hegel | Ferdinand VII of Spain | Ferdinand de Lesseps | Georg Trakl | Georg Forster | Ferdinand Porsche | Ferdinand II, Holy Roman Emperor | Ferdinand II | Ferdinand Hodler | Georg Cantor | Georg Büchner | Georg Baselitz | Ferdinand I of Naples | Ferdinand III |
Disillusioned with the state of mathematical research in North America at the time, he left for Europe in 1891, locating primarily in Berlin, Göttingen and Paris, where he associated with some of the greatest mathematical minds of the time, including Karl Weierstrass, Felix Klein, Ferdinand Georg Frobenius and Max Planck.