A Dürer-sejtés oldalán olvasható, hogy Dürer amatőr, de képzett matematikus is volt, a Wikipédia önéletrajzában viszont egy árva szót nem találok arról, hogy hol vagy kitől tanult matematikát. Lehet erről tudni valamit?

Ezt találtam róla:

Dürer returned to Nürnberg in 1495, and although he does not seem to have met with any of the major Italian mathematicians on his journeys, he did meet Jacopo de Barbari who told him of the mathematical work of Pacioli and its importance to the theory of beauty and art. Nor did Dürer meet with Leonardo da Vinci while in Italy, but he learnt of the importance which that artist placed in mathematics. Back in Nürnberg, Dürer began a serious study of mathematics. He read Euclid's Elements and the important treatise De architectura (On Architecture) by Vitruvius (1st century BC), the famous Roman architect and engineer. He also became familiar with the work of Alberti and Pacioli on mathematics and art, in particular work on proportion.

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