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This paper is a review of relative elliptic theory (i.e., elliptic theory in the category of smooth embeddings) closely related to the Sobolev problem, first studied by Sternin in the 1960s. We consider both analytic aspects of the theory (the structure of the algebra of morphisms, ellipticity, Fredholm property) and topological aspects (index formulas and Riemann—Roch theorems). We also study the algebra of Green operators arising as a subalgebra of the algebra of morphisms.
ddc:510, Institut für Mathematik
ddc:510, Institut für Mathematik
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