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Tagged with jets differential-operators
2 questions
7
votes
1
answer
668
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A very basic question about projections in formal PDE theory
I am learning formal PDE theory for my research and I am currently struggling to have a basic understanding of the operations involved in completing a (say, linear) PDE system to an involutive one (...
3
votes
1
answer
197
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Precise definition of a linear total differential operator
In the works of A. M. Vinogradov on calculus on the infinite jet space, differential equations and "diffieties", a central notion is that of a $\mathcal C$-differential operator. If $\pi:Y\...