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On this page are all constructions for C4[ 480, 81 ]. See Glossary for some detail.

PL(MSY( 12, 20, 11, 0)) = PL(MSY( 12, 20, 9, 0)) = PL(MC3( 4, 60, 1, 19, 31, 40, 1), [12^20, 20^12])

      = PL(MC3( 4, 60, 1, 19, 49, 40, 1), [12^20, 20^12]) = PL(MC3( 12, 20, 1, 19, 9, 0, 1), [12^20, 20^12]) = PL(MC3( 12, 20, 1, 19, 11, 0, 1), [12^20, 20^12])

      = PL(KE_ 60( 5, 17, 10, 53, 5), [12^20, 20^12]) = PL(Curtain_ 60( 1, 11, 13, 23, 24), [12^20, 20^12]) = PL(Br( 12, 20; 9))

      = PL(ATD[ 20, 3]#DCyc[ 12]) = PL(CSI(W( 10, 2)[ 20^ 2], 12)) = BGCG(W( 10, 2), C_ 12, {7', 8'})

      = BGCG(C_ 60(1, 11), C_ 4, {1, 2})

Cyclic coverings