Null Controllability for Degenerate Parabolic Operators
Null Controllability for Degenerate Parabolic Operators
Null Controllability for Degenerate Parabolic Operators
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Theoremconditions <strong>for</strong> invariance(a) ⇐⇒ (b) ⇐⇒ (c)(a) O invariant{(i) L0 d Γ (x) ≥ 0(b) ∀x ∈ Γ(ii) 〈A(x)∇d Γ (x), ∇d Γ (x)〉 = 0(c) O invariantref Friedman & Pinsky (1975)Da Prato & Frankowska (2004)C & Da Prato & Frankowska (2009)stochastic viability . . .invariance =⇒ L 0 degenerate on Γ