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On this page are all constructions for C4[ 320, 76 ]. See Glossary for some detail.

PL(Curtain_ 40( 1, 20, 17, 18, 38), [4^40, 20^8]) = PL(ATD[ 8, 2]#ATD[ 20, 3]) = PL(ATD[ 8, 2]#DCyc[ 20])

      = PL(ATD[ 8, 2]#ATD[ 40, 10]) = PL(ATD[ 40, 10]#DCyc[ 4]) = PL(CSI(K_4,4[ 4^ 4], 20))

      = BGCG(K_4,4, C_ 20, 1') = PL(CS(W( 20, 2)[ 20^ 4], 0)) = PL(CSI(W( 20, 2)[ 20^ 4], 4))

      = BGCG(W( 20, 2), C_ 4, 1') = BGCG({4, 4}_< 12, 8>; K2;{1, 2}) = BGCG(MPS( 4, 40; 9); K2;{2, 3, 4, 7})

Cyclic coverings