126 citations
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Showing 2006 · math.RAShow all
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math.RA2006
A generic characterization of direct summands for orthogonal involutions
Anne Quéguiner-Mathieu
The `transcendental methods' in the algebraic theory of quadratic forms are based on two major results, proved in the 60's by Cassels and Pfister, and known as the representation a…
math.RA2006
From left modules to algebras over an operad: application to combinatorial Hopf algebras
Muriel Livernet
The purpose of this paper is two fold: we study the behaviour of the forgetful functor from S-modules to graded vector spaces in the context of algebras over an operad and derive f…