Change of basis between symmetric matrices
= Change of basis between symmetric matrices
When we have a <symmetric matrix>, a <change of basis> keeps symmetry iff it is done by an <orthogonal matrix>, in which case:
$$
N = BMB^{-1} = OMO^T
$$
= Change of basis between symmetric matrices
When we have a <symmetric matrix>, a <change of basis> keeps symmetry iff it is done by an <orthogonal matrix>, in which case:
$$
N = BMB^{-1} = OMO^T
$$