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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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We give sufficient conditions that the homogeneous differential equations : for t ≥ t_0 (>0),x''(t) + q(t)x'(t) + p(t)x(t) = 0,x''(t) + q(t)x'(t) + F(t, x(φ(t)))=0are oscillatory where 0 ≤ φ(t), 0 < φ'(t), [수식] φ(t) = ∞ and F(t,u) · sgn u ≥ p(t)|u|. We obtain comparison theorems.
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참고문헌 (10)
참고문헌 신청
A. Wintner / 1957 / On the comparison theorem of Kneser-Hille / Math. Scand 5 : 255 ~ 260
C.A. Swanson / 1968 / Comparison and oscillation theory of linear differential equations / Academis Press, New York
Hishyar Kh. Abdullah / 2004 / A note on the oscillation of second order differential equations / Czechoslovak Math. Jour. Publ 54 (4) : 949 ~ 954
Horng-Jaan Li / 1996 / On the nonoscillatory behavior of solutions of a second order linear differential equation / Math. Nachr 182 : 295 ~ 315
Horng-Jaan Li / 2000 / Nonoscillation characterizations of a second order linear differential equations / Math. Nachr 219 : 147 ~ 161
C.A. Swanson / 1968 / Comparison and oscillation theory of linear differential equations / Academis Press, New York
Hishyar Kh. Abdullah / 2004 / A note on the oscillation of second order differential equations / Czechoslovak Math. Jour. Publ 54 (4) : 949 ~ 954
Horng-Jaan Li / 1996 / On the nonoscillatory behavior of solutions of a second order linear differential equation / Math. Nachr 182 : 295 ~ 315
Horng-Jaan Li / 2000 / Nonoscillation characterizations of a second order linear differential equations / Math. Nachr 219 : 147 ~ 161
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