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math.AG2023
Characteristic polynomials and eigenvalues of tensors
Francesco Galuppi, Fulvio Gesmundo, Ettore Teixeira Turatti +1
We lay the geometric foundations for the study of the characteristic polynomial of tensors. For symmetric tensors of order and dimension and symmetric tensors of ord…
math.CO2023★ 1 cited
Triangulations of cosmological polytopes
Martina Juhnke-Kubitzke, Liam Solus, Lorenzo Venturello
A cosmological polytope is defined for a given Feynman diagram, and its canonical form may be used to compute the contribution of the Feynman diagram to the wavefunction of certain…