In mathematics: Developments in pure mathematics …axiom systems for the known algebraic structures, that for the theory of fields, for example, being developed by the German mathematician Ernst Steinitz in 1910. The theory of rings (structures in which it is possible to add, subtract, and multiply but not necessarily divide) was much harder to formalize. It… Read More
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Dedekind
In Richard Dedekind …itself—to be applied to many algebraic structures that hitherto had eluded analysis. Read More
Galois
In Évariste Galois …the “admissible” permutations of the roots of the equation. His key discovery, brilliant and highly imaginative, was that solvability by radicals is possible if and only if the group of automorphisms (functions that take elements of a set to other elements of the set while preserving algebraic operations) is solvable,… Read More
