Lemma
DeepGreen, Stokes & divergence
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §15.4 Surface Integrals, #32 · Multivariable Calculus · Green, Stokes & divergence

Make a “triple Möbius strip” with three twists

Make a “triple Möbius strip” with three twists. Is it orientable—does the normal vector come back in the same or opposite direction?

~11 minWritten answer · check your work with Lemma

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §15.4 Surface Integrals, #32

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