Disconjugacy and C-disfocality of second
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Y. Long; J. Yu; Zh. Guo
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Article
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2005
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Elsevier Science
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English
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The disconjugacy and the C-disfocality of the second-order self-adjoint difference equation are discussed in this paper, where p(t) is nonzero with same sign on N(a + 1, b + 2) and q(t) is real valued on N(a + 1, b + 1). Some sufficient conditions are obtained explicitly in terms of coefficients, w