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Test for square matrix
Test for square, symmetric matrix
Test for orthogonal matrix
is_square_matrix(x)is_symmetric_matrix(x)is_orthogonal_matrix(x)
is_symmetric_matrix(x)
is_orthogonal_matrix(x)
TRUE if x is a square matrix, else FALSE
TRUE
x
FALSE
TRUE if x is a square, symmetric matrix, else FALSE
TRUE if x is an orthogonal matrix, else FALSE
A numeric matrix