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zbMath0707.35167MaRDI QIDQ3488612

R. G. M. Brummelhuis

Publication date: 1990

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

systems counterexample sufficient condition Fefferman-Phong inequality

Mathematics Subject Classification ID

Pseudodifferential operators as generalizations of partial differential operators (35S05) Linear operator inequalities (47A63)

Related Items (3)

Non-commutative harmonic oscillators and related problems ⋮ Cauchy problem for effectively hyperbolic operators with triple characteristics ⋮ A lower bound for systems with double characteristics

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