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Lazard ring

• Lazard proved that it has a very simple structure: it is just a polynomial ring (over the integers) on generators of degree 1, 2, 3, … (where \(c_{i,j}\) has degree \((i + j − 1)\)). Quillen (1969) proved that the coefficient ring of complex cobordism is naturally isomorphic as a graded ring to Lazard’s universal ring.