Stability conjecture for near-biprojections in subfactor planar algebras

At least 5 years old · documented by

Suppose P∙,±\mathscr{P}_{\bullet,\pm} is an irreducible subfactor planar algebra. For x∈P2,±x\in\mathscr{P}_{2,\pm}, let F(x)\mathfrak{F}(x) denote its Fourier transform, and let P,QP,Q be projections and λ\lambda a constant. Stability conjecture. For any ε>0\varepsilon>0, there exists ε′\varepsilon' such that if

∥x−P∥2<ε′and∥F(x)−λQ∥2<ε′,\|x-P\|_2<\varepsilon'\quad\text{and}\quad\|\mathfrak{F}(x)-\lambda Q\|_2<\varepsilon',

then there is a biprojection BB such that ∥x−B∥<ε\|x-B\|<\varepsilon. This asks whether simultaneous closeness to a projection and, after Fourier transform, to a scalar multiple of a projection forces closeness to a biprojection; the supplied text does not indicate whether the conjecture has been resolved.

References

Primary source

Arthur Jaffe, Chunlan Jiang, Zhengwei Liu, Yunxiang Ren and Jinsong Wu, “Quantum Fourier Analysis”, arXiv:2002.03477 (2020).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.