Re: [HM] Partial Differential Equations--when did it become a "field"

Roger Cooke (cooke@emba.uvm.edu)
Sat, 26 Dec 1998 08:39:12 -0500 (EST)

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I believe the classification of pde's as hyperbolic, elliptic, and
parabolic is due to IG Petrovsky (1901--1973).

Roger Cooke

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