Why restrict to normal?
The index of a subgroup is defined for any subgroup, so why is this knowl only about normal subgroups?
The L-functions and modular forms database: Why restrict to normal?mathswitch — infrastructure for relaying and exchanging mathematical concepts
The index of a subgroup is defined for any subgroup, so why is this knowl only about normal subgroups?
The L-functions and modular forms database: Why restrict to normal?