API Reference > geometry-core > CartesianGeometry > InverseMatrixState InverseMatrixState Enumeration A Matrix3d is tagged indicating one of the following states: unknown: it is not know if the matrix is invertible. inverseStored: the matrix has its inverse stored singular: the matrix is known to be singular. Members Name Value Description unknown 0 * The invertibility of the coffs array has not been determined.* Any inverseCoffs contents are random. inverseStored 1 An inverse was computed and stored as the inverseCoffs singular 2 * The coffs array is known to be singular.* Any inverseCoffs contents are random. Defined in geometry3d/Matrix3d.ts Line 145 Last Updated: 29 November, 2022