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math.CA2017
On Drinfel'd associators
Gérard Duchamp, Ngoc Minh, K Penson
In 1986, in order to study the linear representations of the braid group coming from the monodromy of the Knizhnik-Zamolodchikov differential equations,Drinfel'd introduced a…
math.CO2017
Mathematical renormalization in quantum electrodynamics via noncommutative generating series
Gérard Henry Edmond Duchamp, Vincel Hoang Ngoc Minh, Quoc Hoan Ngo +2
In this work, we focus on on the approach by noncommutative formal power series to study the combinatorial aspects of the renormalization at the singularities in …