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Matroid endomorphisms, derivatives, and Kolchin polynomials – Antongiulio Fornasiero (Università degli Studi di Firenze)

Let d be a finite tuple of commuting derivations on a field K. A classical result allows us to associate a numerical polynomial to d (the Kolchin polynomial), measuring the “growth rate” of d.  A multi-variate version of the same polynomial is also…

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