Field extensionsconceptRelated → Galois theoryRelated → Group actionsRelated → RingsRelated → BijectionsRequires → Fields
RingsconceptRelated → IdealsRelated → ModulesRelated → Binary operationsRelated → Field extensionsLeads to → Ideals
Group homomorphismsconceptRelated → Cosets and Lagrange's theoremRelated → Quotient groupsRequires → Bijections
Quotient groupsconceptRelated → Group homomorphismsRelated → Normal subgroupsRequires → SubgroupsRequires → Normal subgroups