[enriquto]

> See as well Baez’s old issue of “This Week’s Finds”

Well seen! TFA is certainly inspired by that very old Baez post, where he explained to Oz the many viewpoints of Fourier analysis. I was dismayed to see that all such viewpoints were algebraic in nature, requiring special structure in the base space, thus neglecting the fundamental case of a general manifold without symmetries. Now it seems that there are still missing generalizations!