Base de Dades Ramon Llull (Llull DB)

Ramon Llull Database (Llull DB)

Universitat de BarcelonaUniversity of Barcelona
La Llull DB és d'accés obert; per consultar-la només cal donar-s'hi d'alta. The Llull DB is open access; to consult it you only need to register.

Bibliografia lul·liana

Lullian bibliography

Bonner, Planas Mulet, Badia, Graphs [2025].

Anthony Bonner, Pere Joan Planas Mulet iand Lola Badia
"Graphs and lattices in the early versions of Ramon Llull's Art"
Historia Mathematica 70 (2025), pp. 31-52.

Even though Ramon Llull (c. 1232–1316) made poor use of explicit mathematical formulations, since the times of G.W. Leibniz his Art of finding and demonstrating the truth has been considered an intellectual tool forerunning varied mathematical deployments, from combinatorics, to voting theory and even to computing sciences. This article shows how Llull used implicitly two mathematical formulations, graph theory and lattice theory, not known to have made their appearance before the 20th century: Ars demonstrativa (c.1283) displays some devices of graph theory and Liber principiorum medicinae (c.1274–1283) develops lattice theory in the context of the University of Montpellier.

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