<span style="font-size: 10.5pt;">四元数矩阵的二次数值域</span>

Quadratic numerical range of a quaternion matrix

GUO Yi-wan, ZHAI Fa-hui

SHANDONG SCIENCE . 2016, (3): 87 -91 . DOI: 10.3976/j.issn.1002-4026.2016.03.015