• Max Koecher

      Articles written in Proceedings – Mathematical Sciences

    • On endomorphisms of degree two

      Max Koecher

      More Details Abstract Fulltext PDF

      LetR be a commutative ring, Δ∈R and letRΔ be the set of conjugacy classes ofR-module endomorphismsf satisfyingf ∘ f = Δ·id. Using a certain subspace of the tensor product of two endomorphisms a commutative and associative product on Rx0394; can be defined. ForR = ℤ a generalization of the composition of quadratic forms arises as a special case.

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