issymmetric

Arguments

A

real or complex square matrix.

t

boolean value (%t or %f).

Description

issymmetric checks whether a matrix A is symmetric, that is if A'=A.

For complex matrices, symmetry is tested using the simple tranpose (not the conjugate transpose). Diagonal elements are not taken into account.

To check whether a complex matrix is Hermitian (A*=A), use the ishermitian function.

Examples

X = [1 2 3;2 1 4; 3 4 1];
issymmetric(X)
// %t

X = [1 2;3 4];
issymmetric(X)
// %f

X = [1 %i; %i 2];
issymmetric(X)
// %t

See also

• ishermitian — Check whether a matrix is hermitian
• isequal — tests the strict global equality between several objects, without equivalences
• quote — (') оператор транспонирования, разграничитель символьной строки

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