High Quality Content by WIKIPEDIA articles! Thoralf Albert Skolem (23 May 1887 – 23 March 1963) was a Norwegian mathematician known mainly for his work on mathematical logic and set theory. Skolem published around 180 papers on Diophantine equations, group theory, lattice theory, and most of all, set theory and mathematical logic. He mostly published in Norwegian journals with limited international circulation, so that his results were occasionally rediscovered by others. An example is the Skolem–Noether theorem, characterizing the automorphisms of simple algebras. Skolem published a proof in 1927, but Emmy Noether independently rediscovered it a few years later. Skolem was among the first to write on lattices. In 1912, he was the first to describe a free distributive lattice generated by n elements. In 1919, he showed that every implicative lattice is distributive and, as a partial converse, that every finite distributive lattice is implicative.

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