Physics – Mathematical Physics
Scientific paper
1998-10-13
Phys. Rev. E59 #5 (1999), 4884
Physics
Mathematical Physics
11 pages, harvmac. revised x 2: refs and minor comments added
Scientific paper
10.1103/PhysRevE.59.4884
In this paper, we give an elementary proof of the additivity of the functional inverses of the resolvents of large $N$ random matrices, using recently developed matrix model techniques. This proof also gives a very natural generalization of these formulae to the case of measures with an external field. A similar approach yields a relation of the same type for multiplication of random matrices.
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