-- -*- M2-comint -*- {* hash: 13137176 *}

i1 : S = QQ[a,b,c,d,e];

i2 : g = cycle S

o2 = Graph{edges => {{a, b}, {b, c}, {c, d}, {d, e}, {a, e}}}
           ring => S
           vertices => {a, b, c, d, e}

o2 : Graph

i3 : T = {{a,b},{d,e}}

o3 = {{a, b}, {d, e}}

o3 : List

i4 : gprime = deleteEdges (g,T)

o4 = HyperGraph{edges => {{c, d}, {b, c}, {a, e}}}
                ring => S
                vertices => {a, b, c, d, e}

o4 : HyperGraph

i5 : h = hyperGraph {a*b*c,c*d*e,a*e}

o5 = HyperGraph{edges => {{a, b, c}, {a, e}, {c, d, e}}}
                ring => S
                vertices => {a, b, c, d, e}

o5 : HyperGraph

i6 : T = edges h

o6 = {{a, b, c}, {a, e}, {c, d, e}}

o6 : List

i7 : hprime = deleteEdges (h,T)

o7 = HyperGraph{edges => {}                }
                ring => S
                vertices => {a, b, c, d, e}

o7 : HyperGraph

i8 :