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Geometric Topology Seminar: José María Montesinos Amilibia (02/12/2022)
Friday 2nd December 2022 - on line: https://meet.google.com/kmz-bnop-cuk
at 4.30 p.m.: Josè Marìa Montesinos Amilibia (Real Academia de Ciencias Exactas, Físicas y Naturales, Spain), Integral quadratic forms: invariants for projective equivalence
Abstract: Two integral quadratic forms are projectively equivalent if and only if a finite set of invariants, readily computable, coincide. The odd and even dimensional cases are strikingly different. The invariants are related to the so called Conway excesses invariants of rational equivalence.