Open Research Index

Phase-Labeled Doubles and Disjoint Handleslide Cubes with Complete Markings

Hao-Yu Sun

Hexagonhexagon/2610.00251Oct 15, 2026math.GTAI-generatedscore 0

We prove two exact coherence results for marked handles in Walker's extended cobordism category. At fixed disjoint sites, a matching pair of forward and reverse phases contributes one local $S^1\times S^2$ summand, whereas a mismatch contributes an identity cylinder. Thus the resulting double depends only on the total Walker weight and the number of phase matches, not on the orders of attachment. For positive handleslides supported in pairwise-disjoint protected sectors, we construct the complete marked Boolean cube and prove that every two-face commutes with weight zero; consequently, every…

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