20N15 20N05 7 automorphism 6 quasigroup 5 group 4 loop 4 16S34 3 20C05 3 20C07 3 51A25 2 51D15 2 94B60 2 94B65 2 Semiabelian \(n\)-ary group 2 \(n\)-ary \(T\)-quasigroup 2 \(n\)-ary group 2 \(n\)-ary quasigroup 2 affine geometry 2 autotopy 2 check character system 2 code 2 flock 2 gyrogroup 2 isotopy 2 medial quasigroup 2 right(left) \(n\)-ary (co)-module algebra 2 right(left) \(n\)-ary (co)-module over (co)algebra 2 self-returning of points 2 symmetric points 2 symmetry 2