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References to 'natural homomorphism'
1. group scheme of multiplicative units by mathcam
2. Myhill-Nerode theorem for semigroups by Ziosilvio
3. proof of Eisenstein criterion by rspuzio
4. proof of the weak Nullstellensatz by pbruin
5. proof of third isomorphism theorem by Thomas Heye
6. proof that a domain is Dedekind if its ideals are products of primes by gel
7. quotient ring by mathwizard
8. the connection between Lie groups and Lie algebras by bwebste