I'm having some trouble in understanding the following passage of text, specially the part of $\Gamma_1$ and $\Gamma_2$...
Also, is $\Omega$ really to be the spherical shell of the sphere, or is that $\partial \Omega$?
2026-03-29 22:28:51.1774823331
A relatively open subset of $\partial \Omega$ with a relative boundary.
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