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초록· 키워드
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It is known that no two of the roots of the polynomial equation \begin{equation}\begin{split} \prod_{l=1}^n (x-r_l) + \prod_{l=1}^n (x+r_l) =0, \label{one-1} \end{split}\end{equation} where $0 < r_1 \leq r_2 \leq \cdots \leq r_n$, can be equal and all of its roots lie on the imaginary axis. In this paper we show that for $0 < h< r_k$, the roots of $$ (x-r_k+h)\prod_{\substack{l=1\\ l\neq k}}^n(x-r_l) + (x+r_k-h)\prod_{\substack{l=1\\l\neq k} }^n (x+r_l) = 0 $$ and the roots of (\ref{one-1}) in the upper half-plane lie alternatively on the imaginary axis.
목차
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참고문헌 (8)
참고문헌 신청
B. Anderson / 1993 / Polynomial root dragging / Amer. Math. Monthly 100(9):864~866
H. J. Fell / 1980 / On the zeros of convex combinations of polynomials / Pacific J. Math 89(1):43~50
C. Frayer / 2010 / Squeezing polynomial roots a nonuniform distance / Missouri J. Math. Sci 22(1):124~129
C. Frayer / 2010 / Polynomial root motion / Amer. Math. Monthly 117(7):641~646
S. -H. Kim / 2002 / Sums of two polynomials with each having real zeros symmetric with the other / Proc. Indian Acad. Sci 112(2):283~288
H. J. Fell / 1980 / On the zeros of convex combinations of polynomials / Pacific J. Math 89(1):43~50
C. Frayer / 2010 / Squeezing polynomial roots a nonuniform distance / Missouri J. Math. Sci 22(1):124~129
C. Frayer / 2010 / Polynomial root motion / Amer. Math. Monthly 117(7):641~646
S. -H. Kim / 2002 / Sums of two polynomials with each having real zeros symmetric with the other / Proc. Indian Acad. Sci 112(2):283~288
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