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Enrico Betti - Enrico Betti (21 October 1823 - 11 August 1892) was an Italian mathematician, now remembered mostly for his 1871 paper on topology that led to the later naming after him of the Betti numbers. He worked also on the theory of equations, giving early expositions of Galois theory.
Betti reaction - The Betti reaction is a chemical reaction of aldehydes, primary aromatic amines and phenols producing α-aminobenzylphenols. The Betti reaction is a special case of the Mannich reaction.
Betti number - In algebraic topology, the Betti numbers of a topological space X are a sequence b0, b1, ... of topological invariants.
Ugo Betti - Ugo Betti (Camerino, February 4, 1892 – Rome, June 9, 1953) was an Italian judge, better known as a poet and dramatist.
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