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RiemannianObstruction

RiemannianObstruction
index for calculation of a mapping invariants (see Invariants).
  • Invariants[f] allows one to calculate invariants of a mapping between manifolds (see Mapping).
  • If mapping f is a submersion then the A (see InvariantA) and T (see InvariantT) invariants are calculated.
  • In that case, some additional calculations are performed, including the riemannian obstruction (if the submersion is not a riemannian one).