Conjecture on convergence and continuity of the scattering transform for integrable functions

From papers

Let fL1(Rd)f\in {\bf L}^1({{\mathbb{R}}}^d), and let S\overline S and SJ\overline S_J denote the limiting and windowed scattering transforms, respectively. Let P\overline{\mathcal P}_\infty be the path space equipped with the Dirac scattering metric, and let condition

denotetheconvergenceconditionintroducedinthepaper.Scatteringconvergenceandcontinuityconjecture.Conditiondenote the convergence condition introduced in the paper. **Scattering convergence and continuity conjecture.** Condition

holds for all fL1(Rd)f\in {\bf L}^1({{\mathbb{R}}}^d). Moreover, if fL1(Rd)f\in {\bf L}^1({{\mathbb{R}}}^d), then Sf(q)\overline S f(q) is continuous in P\overline{\mathcal P}_\infty with respect to the Dirac scattering metric.

Numerical experiments indicate that the convergence property may hold for all integrable functions, and the claimed continuity is presented as analogous to continuity of the Fourier transform for integrable functions. The source does not establish these assertions, so their resolution remains open.

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Sources & referencesView supporting material

Primary source

Stéphane Mallat, “Group Invariant Scattering”, arXiv:1101.2286 (2012).

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