ThinTubeUpgrade.lean`

1 declarations, 0 contain sorry, 0 declared as axioms

The thin-tube upgrade in the original pair measures

Proposition prep:thin-upgrade: the integer exponent improves to the adjacent half-integer. The endpoint and nonendpoint gains below are proved geometric inputs, not extra hypotheses about availability.

theorem OAI.Falconer.thin_tube_upgrade line 17