He made Du Bois-Reymond in 1840 his assistant in physiology, and as a starting-point for an inquiry put into his hands the essay which the Italian Carlo Matteucci, had just published on the electric phenomena of animals.
Emil du Bois-Reymond used ignoramus et ignorabimus in discussing what he called seven "world riddles", in a famous 1880 speech before the Berlin Academy of Sciences.
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It was given credibility by Emil du Bois-Reymond, a German physiologist, in his Über die Grenzen des Naturerkennens ("On the limits of our understanding of nature") of 1872.
W. E. B. Du Bois | Bois de Boulogne | Carl Gustaf Emil Mannerheim | Bois de Vincennes | Sainte-Geneviève-des-Bois, Essonne | Emil Nolde | Sainte-Geneviève-des-Bois | Emil Adolf von Behring | Hermann Emil Fischer | Aulnay-sous-Bois | Emil Gilels | Emil Fischer | Rosny-sous-Bois | Emil Schult | Emil Constantinescu | Emil Brumaru | Curt Bois | Auchy-au-Bois | Robin des Bois | Paul du Bois-Reymond | Franz Joseph Emil Fischer | Emil Viklický | Emil Steinberger | Emil Rödiger | Emil Nofal | Emil Młynarski | Emil Jakob Schindler | Emil Holub | Emil Haury | Emil Ghuri |
This was disproved by Paul du Bois-Reymond, who showed in 1876 that there is a continuous function whose Fourier series diverges at one point.
His lemma defines a sufficient condition to guarantee that a function vanishes almost everywhere.
Born in Gonda, in India, de Montmorency was the son of Major Reymond Hervey de Montmorency and Marion Ellen Coles.
Under the influence of Weierstrass and Bernhard Riemann this concept and related questions were intensely studied at the end of the 19th century by Hermann Hankel, Paul du Bois-Reymond, Ulisse Dini, Cesare Arzelà and others.