Interval Criteria for Oscillation of Sec
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Q. Kong
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Article
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1999
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Elsevier Science
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English
โ 92 KB
ลฝ X . X New oscillation criteria are established for the equation py q qy s 0 that are different from most known ones in the sense that they are based on the informaw . tion only on a sequence of subintervals of t , ฯฑ , rather than on the whole 0 half-line. Our results are more natural according to