Derivation-invariant central factor

Definition
A subring of a Lie ring is termed a derivation-invariant central factor if it is both a derivation-invariant Lie subring and a central factor of the whole Lie ring.

Stronger properties

 * Weaker than::Derivation-invariant direct factor

Weaker properties

 * Stronger than::Derivation-invariant Lie subring
 * Stronger than::Central factor of a Lie ring