message: Bug in Persistent_cohomology: it computes H_1 for a 1-complex, while it does not compute H_2 for a 2-complex.
diff: @@ -285,7 +285,7 @@ class Persistent_cohomology {
  }
  }
  cpx_->assign_key(sigma, cpx_->null_key());
  - } else { // If ku == kv, same connected component: create a 1-cocycle class.
  + } else if (dim_max_ > 1) { // If ku == kv, same connected component: create a 1-cocycle class.
  create_cocycle(sigma, coeff_field_.multiplicative_identity(), coeff_field_.characteristic());
  }
  }
  