Hokkaido Mathematical Journal
- Hokkaido Math. J.
- Volume 46, Number 1 (2017), 41-86.
Differential systems associated with partial differential equations of several unknown functions
From Realization Lemma established by N. Tanaka, differential systems may be regarded as systems of first order differential equations. We characterize the geometric structure of systems of second order partial differential equations of several unknown functions in terms of differential systems and seek a system of equations the Lie algebra of all infinitesimal automorphisms of which is simple.
Hokkaido Math. J., Volume 46, Number 1 (2017), 41-86.
First available in Project Euclid: 30 June 2017
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YANO, Atsushi. Differential systems associated with partial differential equations of several unknown functions. Hokkaido Math. J. 46 (2017), no. 1, 41--86. doi:10.14492/hokmj/1498788096. https://projecteuclid.org/euclid.hokmj/1498788096