Linear Algebra Done Right
《Linear Algebra Done Right》 · 第 263 页 · Section 7C「Positive Operators and Isometries」,Definition 7.56
An $n$-by-$n$ matrix is called unitary if its columns form an orthonormal list in $F^n$.
Linear Algebra Done Right
《Linear Algebra Done Right》 · 第 263 页 · Section 7C「Positive Operators and Isometries」,Definition 7.56
An $n$-by-$n$ matrix is called unitary if its columns form an orthonormal list in $F^n$.
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