Compactness Properties Preserved under Continuous Surjection

Theorem
Let $T_A = \left({X_A, \vartheta_A}\right)$ and $T_B = \left({X_B, \vartheta_B}\right)$ be topological spaces.

Let $\phi: T_A \to T_B$ be a continuous mapping.

If $T_A$ has one of the following properties, then $T_B$ has the same property:


 * Compactness


 * Sigma-Compactness


 * Countable Compactness


 * Sequential Compactness


 * Lindelöf Space