Skip to main content
OCMEBilingual mathematics & derivations繁體中文

OCME · Bilingual mathematics & derivations

Concept derivation guides

299 concept teaching guides, separate from the 36,000 individual question derivations.

Search all questions & derivations →

Concept guide

Kernel, fibers and injectivity from C4 to C2

For f:C4 to C2, f(a)=a mod 2, the normal kernel is {0,2}; fibers are its cosets and f is not injective.

Kernel of a finite group homomorphism

derivation-mko-finite-group-homomorphism-kernel-01