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math-ph2005★ 3 cited
Coalgebras and quantization
Christian Brouder
Two coalgebra structures are used in quantum field theory. The first one is the coalgebra part of a Hopf algebra leading to deformation quantization. The second one is a co-module…
math-ph2002
A quantum field algebra
Christian Brouder
The Laplace Hopf algebra created by Rota and coll. is generalized to provide an algebraic tool for combinatorial problems of quantum field theory. This framework encompasses commut…