| expect_diagonal | Do you expect a matrix to be diagonal? |
| expect_idempotent | Do you expect a function to be idempotent? |
| expect_involutory | Do you expect a function to be involutory? |
| expect_n_idempotent | Do you expect a function to be n-idempotent? |
| expect_n_involutory | Do you expect a function to be n-involutory? |
| expect_orthogonal | Do you expect a matrix to be orthogonal? |
| expect_periodic | Do you expect a function to be periodic? |
| expect_psd | Do you expect a matrix to be positive semidefinite? |
| expect_spd | Do you expect a matrix to be symmetric positive definite? |
| expect_symmetric | Do you expect a matrix to be symmetric? |