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- W1978211070 abstract "where x E R” and A(t) is a real continuous II x nmatrix satisfying certain sign conditions. They showed that if A(t) = (q j(Q) . IS such that aij(t) B 0, i # j, i, j = 1,. . . , n (as observed in [3], there is no loss in generality in assuming fij(t) 2 0, i, j = 1, . . . , n) and if A is symmetric, then if T is the first conjugate point of (1 .l) to the right oft = 0 the equation has a nontrivial solution x(t) such that" @default.
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- W1978211070 date "1978-01-01" @default.
- W1978211070 modified "2023-10-03" @default.
- W1978211070 title "Positive solutions and conjugate points for systems of differential equations" @default.
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- W1978211070 doi "https://doi.org/10.1016/0362-546x(78)90045-7" @default.
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