Hermitian form

Japanese: エルミート形式 - エルミートけいしき(英語表記)Hermitian form
Hermitian form
For a complex number α, let us denote the complex conjugate of α by (if α = a + bi , then = a - bi ). For n 2 numbers a i j such that ā i j = a j i (1 i , jn ), an equation for complex variables x 1 , x 2 , …, x n is called a Hermitian form. H ( x ) takes real values ​​for any x 1 , x 2 , …, x n . Let a i j be an nth order square matrix with ( i , j ) components, and denote this as A. For an nth order square matrix X , let X * denote the transposed matrix t of the matrix obtained by taking the complex conjugate of each component of X , then the condition i j = a j i can be expressed as A = A * .

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
複素数αに対して,αの複素共役をで表すことにする(α=abiならば=abi)。āijaji(1≦i,jn)をみたすn2個の数aijに対し,複素変数x1,x2,……,xnの式,をエルミート形式という。H(x)は任意のx1,x2,……,xnに対し実数値をとる。aijを(i,j)成分とするn次正方行列とし,これをAと記す。n次正方行列Xに対して,Xの各成分の複素共役をとった行列の転置行列tX*で表すものとすると,条件ijajiは,AA*と表される。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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