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math.AG2025
Explicit non-free tensors
Maxim van den Berg, Matthias Christandl, Vladimir Lysikov +3
Free tensors are tensors which, after a change of bases, have free support: any two distinct elements of its support differ in at least two coordinates. They play a distinguished r…
math.AG2022★ 1 cited
Partial Degeneration of Tensors
Matthias Christandl, Fulvio Gesmundo, Vladimir Lysikov +1
Tensors are often studied by introducing preorders such as restriction and degeneration: the former describes transformations of the tensors by local linear maps on its tensor fact…