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Stacked on 2/10. Adds:
* `frontier_image_paramSet_subset` — the frontier of `expMapBasis '' paramSet K`
lies in the image of the parameter-box boundary together with `{0}`.
* `expMapBasis_mem_iUnion_faceMapSide` (private) — the side-face membership step.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This was referenced Jun 18, 2026
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Part 3 of 10 of the normLeOne frontier Lipschitz cover (split from PR #9). Stacked on part 2 — review the parents first; GitHub retargets the base toward
masteras they merge.frontier_image_paramSet_subset— the frontier ofexpMapBasis '' paramSet Klies in the box-boundary image together with{0}; plus the private side-face membership step.Builds green on the
v4.31.0-rc1/ mathlib-master pin.🤖 Generated with Claude Code