Conservation laws, differential identities, and constraints of partial differential equations
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We consider specific cohomological properties such as low-dimensional conservation laws and differential identities of systems of partial differential equations (PDEs). We show that such properties are inherent to complex systems such as evolution systems with constraints. The mathematical tools used here are the algebraic analysis of PDEs and cohomologies over differential algebras and modules.
Keywordsdifferential algebra conservation law differential identity differential constraint
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