List of top Linear Algebra Questions on Symmetric, Skew-Symmetric, Hermitian, Skew-Hermitian, Normal, Orthogonal and Unitary Matrices asked in GATE MA

Let \( \mathbb{R}[X] \) denote the ring of polynomials in \( X \) with real coefficients. Then, the quotient ring \( \mathbb{R}[X]/(X^4 + 4) \) is
No. of group homomorphism from Z4 to S4