Abstract
This paper first shows that the Riemann localisation property holds for the Fourier-Laplace series partial sum for sufficiently smooth functions on the two-dimensional sphere, but does not hold for spheres of higher dimension. By Riemann localisation on the sphere \(\mathbb {S}^{d}\subset \mathbb {R}^{d+1}\), \(d\ge 2\), we mean that for a suitable subset X of \(\mathbb {L}_{p}(\mathbb {S}^{d})\), \(1\le p\le \infty \), the \(\mathbb {L}_{p}\)-norm of the Fourier local convolution of \(f\in X\) converges to zero as the degree goes to infinity. The Fourier local convolution of f at \(\mathbf {x}\in \mathbb {S}^{d}\) is the Fourier convolution with a modified version of f obtained by replacing values of f by zero on a neighbourhood of \(\mathbf {x}\). The failure of Riemann localisation for \(d>2\) can be overcome by considering a filtered version: we prove that for a sphere of any dimension and sufficiently smooth filter the corresponding local convolution always has the Riemann localisation property. Key tools are asymptotic estimates of the Fourier and filtered kernels.
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Notes
Let R(t) be a rational polynomial taking the form \(R(t)=p(t)/q(t)\), where p(t) and q(t) are polynomials with \(q\ne 0\). The degree of R(t) is \(\deg (R):=\deg (p)-\deg (q)\).
References
Antoine, J.-P., Vandergheynst, P.: Wavelets on the two-sphere and other conic sections. J. Fourier Anal. Appl. 13(4), 369–386 (2007)
Baldi, P., Kerkyacharian, G., Marinucci, D., Picard, D.: Adaptive density estimation for directional data using needlets. Ann. Stat. 37(6A), 3362–3395 (2009)
Baldi, P., Kerkyacharian, G., Marinucci, D., Picard, D.: Asymptotics for spherical needlets. Ann. Stat. 37(3), 1150–1171 (2009)
Belinsky, E., Dai, F., Ditzian, Z.: Multivariate approximating averages. J. Approx. Theory 125(1), 85–105 (2003)
Berens, H., Butzer, P.L., Pawelke, S.: Limitierungsverfahren von Reihen mehrdimensionaler Kugelfunktionen und deren Saturationsverhalten. Publ. Res. Inst. Math. Sci. Ser. A 4, 201–268 (1968/1969)
Bonami, A., Clerc, J.-L.: Sommes de Cesàro et multiplicateurs des développements en harmoniques sphériques. Trans. Am. Math. Soc. 183, 223–263 (1973)
Brandolini, L., Colzani, L.: Localization and convergence of eigenfunction expansions. J. Fourier Anal. Appl. 5(5), 431–447 (1999)
Carbery, A., Soria, F.: Almost-everywhere convergence of Fourier integrals for functions in Sobolev spaces, and an \(L^2\)-localisation principle. Rev. Mat. Iberoamericana 4(2), 319–337 (1988)
Carbery, A., Soria, F.: Pointwise Fourier inversion and localisation in \({\mathbb{R}^n}\). J. Fourier Anal. Appl. 3(special issue), 847–858 (1997)
Carbery, A., Soria, F.: Sets of divergence for the localization problem for Fourier integrals. C. R. Acad. Sci. Paris Sér. I Math. 325(12), 1283–1286 (1997)
NIST Digital Library of Mathematical Functions: http://dlmf.nist.gov/. Release 1.0.9 of 2014-08-29. Online companion to [21]
Freeden, W., Mayer, C.: Wavelets generated by layer potentials. Appl. Comput. Harmon. Anal. 14(3), 195–237 (2003)
Freeden, W., Windheuser, U.: Combined spherical harmonic and wavelet expansion—a future concept in Earth’s gravitational determination. Appl. Comput. Harmon. Anal. 4(1), 1–37 (1997)
Frenzen, C.L., Wong, R.: A uniform asymptotic expansion of the Jacobi polynomials with error bounds. Can. J. Math. 37(5), 979–1007 (1985)
Gerhards, C.: A combination of downward continuation and local approximation for harmonic potentials. Inverse Prob. 30(8), 085004, 30 (2014)
Hille, E., Klein, G.: Riemann’s localization theorem for Fourier series. Duke Math. J. 21, 587–591 (1954)
Ivanov, K., Petrushev, P., Xu, Y.: Sub-exponentially localized kernels and frames induced by orthogonal expansions. Math. Z. 264(2), 361–397 (2010)
Marinucci, D., Peccati, G.: Random Fields on the Sphere. Representation, Limit Theorems and Cosmological Applications. London Mathematical Society Lecture Note Series, vol. 389. Cambridge University Press, Cambridge (2011)
Mhaskar, H.N.: On the representation of smooth functions on the sphere using finitely many bits. Appl. Comput. Harmon. Anal. 18(3), 215–233 (2005)
Narcowich, F.J., Petrushev, P., Ward, J.D.: Localized tight frames on spheres. SIAM J. Math. Anal. 38(2), 574–594 (2006)
Petrushev, P., Xu, Y.: Localized polynomial frames on the interval with Jacobi weights. J. Fourier Anal. Appl. 11(5), 557–575 (2005)
Pinsky, M.A.: Pointwise Fourier inversion and related eigenfunction expansions. Commun. Pure Appl. Math. 47(5), 653–681 (1994)
Pinsky, M.A.: Pointwise Fourier inversion in several variables. Not. Am. Math. Soc. 42(3), 330–334 (1995)
Pinsky, M.A., Taylor, M.E.: Pointwise Fourier inversion: a wave equation approach. J. Fourier Anal. Appl. 3(6), 647–703 (1997)
Simons, F.J., Dahlen, F.A., Wieczorek, M.A.: Spatiospectral concentration on a sphere. SIAM Rev. 48(3), 504–536 (2006)
Stein, E.M., Shakarchi, R.: Fourier Analysis: An Introduction. Princeton Lectures in Analysis, vol. 1. Princeton University Press, Princeton (2003)
Szegő, G.: Orthogonal Polynomials. American Mathematical Society Colloquium Publications, vol. 23, 4th edn. AMS, Providence (2003)
Taylor, M.E.: Pointwise Fourier inversion on tori and other compact manifolds. J. Fourier Anal. Appl. 5(5), 449–463 (1999)
Taylor, M.E.: Eigenfunction expansions and the Pinsky phenomenon on compact manifolds. J. Fourier Anal. Appl. 7(5), 507–522 (2001)
Taylor, M.E.: The Gibbs phenomenon, the Pinsky phenomenon, and variants for eigenfunction expansions. Commun. Partial Differ. Equ. 27(3–4), 565–605 (2002)
Telyakovskiĭ, S.A.: The Riemann localization principle and an estimate for the rate of convergence. Sovrem. Mat. Fundam. Napravl. 25, 178–181 (2007)
Wang, K., Li, L.: Harmonic analysis and approximation on the unit sphere. Science Press, Beijing (2006)
Wang, Y.G., Le Gia, Q.T., Sloan, I.H., Womersley, R.S.: Fully discrete needlet approximation on the sphere. Appl. Comput. Harmon. Anal. (2016) (in press)
Acknowledgments
The authors would like to thank Christian Gerhards and Leonardo Colzani for their discussion and comments on the convergence of the Fourier local convolution and the localisation principle. The authors also thank the anonymous referees for their comments on simplifying the proof of Theorem 3.2. This research was supported under the Australian Research Council’s Discovery Project DP120101816. The first author was supported under the University International Postgraduate Award (UIPA) of UNSW Australia.
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Communicated by Pencho Petrushev.
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Wang, Y.G., Sloan, I.H. & Womersley, R.S. Riemann Localisation on the Sphere. J Fourier Anal Appl 24, 141–183 (2018). https://doi.org/10.1007/s00041-016-9496-4
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DOI: https://doi.org/10.1007/s00041-016-9496-4