Carl Linnaeus end of his life he timidly advanced the hypothesis that all the species of one genus constituted at the creation one species; and from the last edition of his "Systema Naturæ" he quietly left out the strongly orthodox statement of the fixity of each species, which he had insisted upon in his earlier works. ... warnings came speedily both from the Catholic and Protestant sides. The mathematical PageRank algorithm, applied to 24 multilingual Wikipedia editions in 2014, published in "PLOS ONE" in 2015, placed Carl Linnaeus at the top historical figure, above Jesus, Aristotle, Napoleon, and Adolf Hitler (in that
Structure (category theory) the morphisms are group homomorphisms: that is, of structures on one type, and mappings respecting that structure. Starting with a category "C" given abstractly, the challenge is to infer what structure it is on the objects that the morphisms 'preserve'. The term "structure" was much used in connection with the Bourbaki group's approach. There is even a definition. Structure must definitely include topological space as well as the standard abstract algebra notions. Structure in this sense is probably commensurate with the idea of concrete category that can be presented in a definite way — the topological case means that infinitary