15.6 DefaultRing and Ring for Cyclotomic Integers

For a set S of cyclotomic integers,

DefaultRing( S ) is the ring of integers in CF( S ) (see DefaultRing),

Ring( S ) is the ring of integers in NF( S ) (see Ring).

    gap> Ring( [ E(5) ] );
    Ring( E(5) )
    gap> Ring( [ EB(7) ] );
    Ring( E(7)+E(7)^2+E(7)^4 )
    gap> DefaultRing( [ EB(7) ] );
    Ring( E(7) ) 

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