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Presentations
This is a collection of slides of some recent presentations (invited talks and/or contributions at meetings, seminars).

Variably Scaled Persistence Kernels (VSPKs) for persistent homology applications
invited talk at the Minisymposium "Approximation Theory and Applications", Second Joint Meeting AMSUMI
University of Palermo, 25 July 2024 (1.1Mb)

A short tour of radial basis functions and meshless approximation (in about 50 slides)
seminar given at the University of Cagliari, April 29th, 2024
(8.3Mb)

AldazKounchevRender (AKR) operators: approximation properties and their extension to higher dimensions
seminar given at the Reny Institute, Budapest, February 8th, 2024
(2.4Mb)
 On $(\beta,\gamma)$Chebyshev functions and points
plenary talk at "Multivariate Approximation Theory", Ruischholzhausen 1217 March 2023 (1.28Mb)

My approximation theory results using the Five Ws rule Plenary talk at "Constructuve Functions Theory 3", Krakow 2224 Feb. 2023 (8.9Mb)
 On $(\beta,\gamma)$Chebyshev functions and points of the interval and some extensions
Plenary talk at the INTERNATIONAL ECONFERENCE ON MATHEMATICAL AND STATISTICAL SCIENCES: A SELCUK MEETING
2022 Oct. 2022 (1.2 Mb)
 Interpolation and approximation
of discontinuities via mapped polynomials and discontinous kernels Plenary talk at "MACMAS 2019 International Conference", Granada 911 Sep. 2019 (2.8Mb)
 Radial basis functions topics in
about 150 slides Tutorial done at the "2nd Workshop on Meshless for finance", Teheran 35 Feb. 2019 (5.5Mb)
 Treating geospatial complex data by compression and reduced order methods, UMISIMAIPTM joint meeting, Wroclaw 19 Sept. 2018 (4.0Mb)
 Radial basis functions topics
in 40 +1 slides, March 22, 2018 (1.8Mb)
 New developments on rational RBF
INdAMGNCS annual meeting, Montecatini Terme (PT), 14 Feb.  16 Feb., 2018 (2.0Mb)
 Fast and stable rational RBFbased Partion of Unity interpolation
SMART 2017, Gaeta (Latina) Italy, 17 Sep.  21 Sep. 2017 (4.3Mb).
 Lissajous sampling and adaptive spectral filtering for
the reduction of the Gibbs phenomenon
in Magnetic Particle Imaging (MPI)
2nd IMWorkshop on "Applied Approximation, Signals and Images"  Bernried, 27 Feb.  3 Mar. 2017 (4.09Mb).
 On the rescaled method for RBF approximation
Workshop "Multivariate Approximation and Interpolation with Applications"  Luminy (France), September 21st, 2016 (1.7Mb).
 Intergration on manifolds by mapped lowdiscrepancy points and greedy minimal K_senergy points
Workshop "IBC on the 70th anniversary of Henryk Woźniakowski"  Bedlewo (Poland), September 1st, 2016 (1.7Mb).
 Polynomial approximation on Lissajous curves on the dcube
"5th Journèes d'Approximation"  Lille (France), May 20th, 2016 (0.84 Mb).
 Kernelbased Image Reconstruction from scattered Radon data by (anisotropic) positive definite functions.
Worskshop on "Kernelbased methods and function approximation"  Department of Mathematics, University of Torino (Italy), February 5th, 2016 (2.3Mb).

On the Lebesgue constant of the FloaterHormann
rational interpolants Colloquium at the Department of
Mathematics, Université de Fribourg (Swiss) on Nov. 3rd, 2015
(1.7Mb).

Trivariate polynomial approximation on Lissajous curves
Talk given at the Scholoss Dagsthul (Germany), at the seminar 15251 on June 17th, 2015 (823 Kb).

A new quasiMonte Carlo technique based on nonnegative least squares and approximate
Fekete points
Talk given at the Department of Informatics, University of Antwerp (Belgium), on Dec 5th, 2014 (1.7 Mb).

Multivariate Christoffel functions and hyperinterpolation
Talk given at the Institute of Numerical and Applied Mathematics, University of Goettingen (Germany), on Dec 2nd, 2014 (4.2 Kb).

On a new orthonormal basis for RBF native spaces and its fast computation
Talk given at the Department of Mathematics, University of Torino (Italy), on June 11th, 2014 (2.1 Mb).

Padua points: genesis, theory, computation and applications
this is the talk presenting the more significant results on Padua points.
The last presentation was done at the Department of Mathematics, University of Warsaw (Poland), on April 2nd, 2014 (0.711 Mb).

On a new orthonormal basis for RBF native spaces
San Diego (USA), SIAM Annual meeting: July 8th, 2013 (1.08 Mb).

3dimensional Weakly Admissible Meshes: interpolation and cubature
Hagen (Germany): Sept. 27th, 2011 (2.03 Mb).

3dimensional Weakly Admissible Meshes
Budapest (Hungary): Jul. 8th, 2011 (1.92 Mb).

On Multivariate Newton Interpolation
at Discrete Leja Points
Goettingen (Germany): Jan. 14th, 2011 (2.24 Mb).

On the Lebesgue constants of a family of rational
interpolants on equispaced and nonequispaced points
Padova: Dec. 22nd, 2010 (1.07 Mb).

On the Lebesgue constant of FloaterHormann's rational interpolant on
equispaced points
Oslo (Norway): Sept. 27th, 2010 (930 Kb).
 Weakly Admissible Meshes and Discrete Extremal Sets ,
CFT 2010, Sozopol (Bulgaria): Jun. 5th, 2010 (517 Kb).
 Matching food and wine and (some) mathematics ,
DWCAA09 Canazei (Italy): Sept. 6th, 2009 (760 Kb).
 Geometric greedy and greedy points for RBF interpolation ,
CMMSE09, Gijon (Spain): Jul. 2th, 2009 (747 Kb).
 Padua points: theory, computation and applications ,
Oslo (Norway): Apr. 2th, 2009 (677 Kb).
 Interpolation points and interpolation formule on the square ,
Zaragoza (Spain): Dec. 11th, 2008 (1.2 Mb).
 Stability and Lebesgue Constants in RBF Interpolation ,
Goettingen (Germany): Sept. 20th, 2008 (1.35 Mb).
 New cubature and hyperinterpolation
in the cube ,
Toensberg (Norway): Jun. 28th, 2008 (1.19 Mb).