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5. Elliptic operators
5.1 The abstract point of view
The various problems to which we will apply the preceding theory are presented in the following abstract form: given two Hilbert spaces V and H we assume given a compact application γ : V → H, a coercive sesquilinear form a on V and a continuous antilinear form q on V, we then seek to solve in V the following variational problem
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Elliptic operators
Transient problems
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