Size-95 Latin eq677 magma: a permutation-twisted 5x19 fibre bundle. See the size-95 page comment for the general family.
5-class congruence theta, five 19-element classes. Coordinates (i,u): i in F_5 class index, u in F_19 fibre coord; row Ci lists u=0,1,...,18:
C0: 90,86,11,41,61,66,46,56,31,76,36,71,16,6,26,21,81,51,1
C1: 91,88,10,40,63,68,48,58,30,78,35,73,15,5,25,20,83,53,0
C2: 93,85,13,43,60,65,45,55,33,75,38,70,18,7,28,23,80,50,3
C3: 92,87,12,42,62,67,47,57,32,77,37,72,17,8,27,22,82,52,2
C4: 94,89,14,44,64,69,49,59,34,79,39,74,19,9,29,24,84,54,4
Quotient M/theta is magma#e549b5f8 (i*j = 2i+4j). Each theta-class is the F_19 affine law u*v = 7u+3v. In these coordinates:
(i,u)*(j,v) = (2i+4j, 7u+3v) if i=j
(i,u)*(j,v) = (2i+4j, p^-1(7 p(u)+3 p(v))) if i!=j
with twist p = (9,11,14,18,0,16,10,2,3,5,17,4,6,7,15,8,1,13,12).
Right-cancellative, non-idempotent. [text written by Claude]
dwrensha · 2026-06-17 11:45:41