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    • Topological Invariants of Principal G-Bundles with Singularities 

      Arias Amaya F.A.; Malakhaltsev M. (Pleiades Publishing, 2018)
      principal G-bundle with singularities is a principal bundle π: P¯ → M with structure group G¯ which reduces to a subgroup G ⊂ G¯ on the set M \ Σ, where M is an n-dimensional compact manifold and Σ ⊂ M is a k-dimensional ...