is of size m. Let R = UP, where U i

is of size m. Let R = UP, where U is unitary and P = (R*R)l12 >, 0, be the
polar decomposition of R (cf. [4, p. 1691) and assume that U = [aij]. Let b
satisfy ( - 1)” + ’ b det U > 0, and c be such that 0 belongs to the interior of
the numerical range of the 2x2 matrix

結果 (中文) 1:

是的大小 m。让 R = 向上，U 是单一和 P = (R * R) l12 >，0，是R (参见 [4，p.1691) 的极分解和假设，U = [aij]。让 b满足 (-1)"+ det U > 0 b 和 c 是这样 0 属于内部的2 × 2 矩阵数值范围

結果 (中文) 3:

尺寸是M R =，其中U是酉，P =（R R）L12 >，0，为R的
极分解（参见[ 4，p. 1691）假定U = [转置]。让B
满足（1）”B DET U＞0，C是0属于
的2x2矩阵
数值范围内