Tetrahedra and exponential diophantine equations

Mercoledì 26 novembre 2025 alle ore 16.00, presso il Dipartimento di Matematrica e Fisica (Lungotevere Dante 376 - Aula M1)., il prof. Bjorn Poonen (MIT) terrà il Colloquium di Matematica dal titolo "Tetrahedra and exponential diophantine equations".

Abstract:

Dehn answered Hilbert's third problem around 1900 by showing that certain tetrahedra are not scissors-congruent to a cube. I will explain progress towards the problem of parametrizing all tetrahedra that are scissors-congruent to a cube. This is based on joint work with Kiran Kedlaya, Alexander Kolpakov, and Michael Rubinstein, and further work of two former MIT undergraduates, A. Anas Chentouf and Yihang Sun.

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