Lemma 20.33.6. Let (X, \mathcal{O}_ X) be a ringed space. Let j : U \to X be an open subspace. Let T \subset X be a closed subset contained in U.
If E is an object of D(\mathcal{O}_ X) whose cohomology sheaves are supported on T, then E \to Rj_*(E|_ U) is an isomorphism.
If F is an object of D(\mathcal{O}_ U) whose cohomology sheaves are supported on T, then j_!F \to Rj_*F is an isomorphism.
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