Kernels and images
What a homomorphism throws away and what it reaches: the kernel is always normal, injectivity is exactly a trivial kernel, and the two sizes multiply to the size of the source.
About 30 minutes7 activities Paper packet
What a homomorphism throws away and what it reaches: the kernel is always normal, injectivity is exactly a trivial kernel, and the two sizes multiply to the size of the source.
About 30 minutes7 activities Paper packet