Source: /cirosantilli/isometry-group

= Isometry group
{wiki}

The <group (mathematics)> of all transformations that preserve some <bilinear form>, notable examples:
* <orthogonal group>{child} preserves the <inner product>
* <unitary group>{child} preserves a <Hermitian form>
* <Lorentz group>{child} preserves the <Minkowski inner product>