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What is a topological feature, that a (some) tqftTQFT (e.g. in 3 or 4 dim) sees but homology/cohomology/homotopy groups dontdon't? Or: what is an example where using classical theories is hard, but using a tqftTQFT is comparatively easy?
What is a topological feature, that a (some) tqft (e.g. in 3 or 4 dim) sees but homology/cohomology/homotopy groups dont? Or: what is an example where using classical theories is hard, but using a tqft is comparatively easy?
What is a topological feature, that a (some) TQFT (e.g. in 3 or 4 dim) sees but homology/cohomology/homotopy groups don't? Or: what is an example where using classical theories is hard, but using a TQFT is comparatively easy?
