论文标题
一些三角形矩阵的kippenhahn曲线
Kippenhahn curves of some tridiagonal matrices
论文作者
论文摘要
考虑到具有恒定的主对角线和倒数分支对等方的三角形矩阵。此类矩阵的条件最高6 x 6，具有椭圆数值范围。
Tridiagonal matrices with constant main diagonal and reciprocal pairs of off-diagonal entries are considered. Conditions for such matrices with sizes up to 6-by-6 to have elliptical numerical ranges are obtained.
