Re: [理工] [線代] Hermitian and symmetric matrix
: 題目: [99成大數學]
: State the defintion of Hermitian matrix.
: Let A and B be real matrices.
: If A+iB is a Hermitian matrix,
: show that [ A -B ] is a symmetric matrix.
: B A
A+iB is a Hermitian
H
=> (A+iB) = A+iB
H T T
(A+iB) = A -iB = A+iB
因為A and B be real matrices
T T
A = A B = -B
T T T
因此 [ A -B ] = [ A B ] = [ A -B ]
B A T T B A
(-B) A
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