| 研究開始時の研究の概要 |
This project has two objectives: (1) to define and study link-homotopy for 3-manifolds, starting with homology cobordisms, using a Milnor-Johnson framework and Johnson homomorphisms as potential invariants, and (2) to revisit the Goussarov-Habiro conjecture in concordance, exploring higher-order Arf invariants via clasper theory and reformulating the conjecture in welded knot theory for new insights.
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