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Coffman, C. V.; Duffin, R. J.; Mizel, V. J.

Positivity of weak solutions of non-uniformly elliptic equations. (English) Zbl 0302.35040

Ann. Mat. Pura Appl., IV. Ser. 104, 209-238 (1975).
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Cited in 10 Documents

MSC:

35J25 Boundary value problems for second-order elliptic equations
35D05 Existence of generalized solutions of PDE (MSC2000)
35J70 Degenerate elliptic equations
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
35P15 Estimates of eigenvalues in context of PDEs
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References:

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