Abstract We describe all Carnot algebras with growth vector (2, 3, 5, 6), their normal forms, an invariant that separates them, and a change of basis transforms such algebra into form. For each form, Casimir functions symplectic foliations on the Lie coalgebra are computed. An forms left-invariant 6)-distributions described. A classification, up to isometries, sub-Riemannian structures 6)-Carno...

6.1.1 Preface: CpG islands It is known that due to biochemical considerations that CpG, the pair of nocleotides C and G, appearing successively, in this order, along one DNA starnd, is relatively rare in DNA sequences, excluding particular sub-sequences, which are several hundreds of nucleotides long, where the couple CpG is more frequent. These sub-sequences, called CpG islands, are known to a...