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) operations will be needed. "Presentation of a category" (analogously to presentation of a group) can in fact be approached in a number of ways, the "category" structure not being (quite) an algebraic structure in its own right. The term "transport of structure" is the 'French' way of expressing "covariance" or "equivariance" as a constraint: transfer structure by a surjection and then (if there is an existing structure) compare. Since any group is a one-object category, a special case of the question about "what the morphisms preserve" is this: how to consider any group G as a symmetry group? That is