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arxiv: 0806.2765 · v3 · submitted 2008-06-17 · 🧮 math.AP · math-ph· math.MP

Local conservation laws of second-order evolution equations

classification 🧮 math.AP math-phmath.MP
keywords conservationlawsequationscontactdimensionsequivalenceevolutionlocal
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Generalizing results by Bryant and Griffiths [Duke Math. J., 1995, V.78, 531-676], we completely describe local conservation laws of second-order (1+1)-dimensional evolution equations up to contact equivalence. The possible dimensions of spaces of conservation laws prove to be 0, 1, 2 and infinity. The canonical forms of equations with respect to contact equivalence are found for all nonzero dimensions of spaces of conservation laws.

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