Monoïde des enlacements et facteurs orthogonaux
Monoïde des enlacements et facteurs orthogonaux
A linking pairing is a symetric bilinear pairing λ : G × G → Q/Z on a finite abelian group.The set of isomorphism classes of linking pairings is a noncancellative monoid E under orthogonal sum, which is infinitely generated and infinitely related.We propose a new presentation of E that enables …