Membership
Profiles
Research Subjects
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Approximation Theory, Orthogonal Polynomials and Special Functions
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Numerical Analysis
Recent Research Projects
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Multivariate Approximation with Applications, PID2023.149117NB.I00. Research Project of the National Plan. Ministry of Science, Innovation and Universities of Spain (MICINN), and the European Regional Development Fund (ERDF). Coordinators Miguel A. Piñar (UGR) and Teresa E. Pérez (UGR). Duration: from 09/01/2024 to 08/31/2027.
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Unit of Excelence «María de Maeztu» IMAG, CEX2020-001105-M. Centers and Units of Excellence. Ministry of Science, Innovation and Universities of Spain. Coordinator Joaquín Pérez Muñoz (UGR). Duration: from 2022 to 2025.
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GOYA - Group on Orthogonality and Applications,
FQM-384
Research Group supported by Junta de Andalucía (Spain). Coordinator:
Lidia Fernández (UGR). Duration: from 07/03/2017.
Publications
2026-2030
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A. Branquinho, A. M. Delgado, T. E. Pérez,
Simplex and generalized Disk Polynomials: Explicit relations and Partial Differential Equations.
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T. E. Pérez, M. A. Piñar, M. J. Recarte,
Bivariate Bernstein-type operators on the simplex.
Standard and negative parameters.
2021-2025
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C. F. Bracciali, A. M. Delgado, L. Fernández, T. E. Pérez,
R_II type three term relations for bivariate polynomials orthogonal with respect to varying weights.
Results in Mathematics
80 (2025), 206.
Article
MR4961449
arXiv
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A. Branquinho, A. Foulquié, T. E. Pérez, M. A. Piñar,
Lax-type pairs in the theory of bivariate orthogonal
polynomials.
Linear Algebra Appl.
721 (2025), pages 219-239.
Open Access
MR4913737
arXiv
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C. F. Bracciali, G. S. Costa, T. E. Pérez,
Centrosymmetric and reverse matrices in bivariate orthogonal polynomials.
Linear Algebra Appl.
692 (2024), 212-240.
Open Access
MR4732924
arXiv
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L. Fernández, F. Marcellán, T. E. Pérez, M. A. Piñar,
Sobolev orthogonal polynomials and spectral methods in boundary value problems.
Appl. Numer. Math.
200 (2024), 254-272.
Open Access
MR4731107
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L. Fernández, F. Marcellán, T. E. Pérez, M. A. Piñar,
Sobolev orthogonal polynomials for solving the
Schrödinger equation with potentials V(x) = x^{2k}, k > 1.
In: Castillo, K., Durán, A.J. (eds) Orthogonal Polynomials and Special Functions. Coimbra Mathematical Texts
3 . Springer, Cham. 2024.
DOI
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D. Lara-Velasco, T. E. Pérez,
Bernstein-type operators preserving derivatives.
Comput. Appl. Math.
43 (2024), no. 5, Paper No. 277, 30 pp.
Open Access
MR4757556
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A. Branquinho, A. Foulquié, T. E. Pérez,
Quadratic decomposition of bivariate orthogonal polynomials.
Medit. J. Math.
20 (2023), no. 3, 118.
Open Access
MR4549895
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M. E. Marriaga, T. E. Pérez, M. A. Piñar, M. J. Recarte,
Approximation via gradients on the ball. The Zernike case.
J. Comput. Appl. Math.
430 (2023), Paper No. 115258
Open Access
MR4577313
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M. E. Marriaga, T. E. Pérez, M. J. Recarte,
Simultaneous approximation via laplacians on the unit ball.
Medit. J. Math.
20 (2023), Article Number 316.
Open Access
MR4655120
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M. J. Recarte, M. E. Marriaga, T. E. Pérez,
A class of Bernstein-type operators on the unit disk.
Bull. Malays. Math. Sci. Soc.
46 (2023), no. 4, 127.
Open Access
MR4596003
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R. Aktas, I. Area, T. E. Pérez,
Three term relations for multivariate Uvarov orthogonal polynomials.
Comput. Appl. Math.
41 (2022), Article number: 330.
Open Access
MR4491185
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C. F. Bracciali, G. S. Costa, T. E. Pérez,
Two variable Freud orthogonal polynomials and matrix Painlevé-type difference equations.
J. Differ. Equ. Appl.
28 (2022) 1157-1177.
arXiv
MR4502152
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C. F. Bracciali, T. E. Pérez,
Mixed orthogonality on the unit ball.
Comput. Appl. Math.
40 (2021), no. 8, Paper No. 274.
MR4325900
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F. Lizarte, T. E. Pérez, M. A. Piñar,
The radial part of a class of Sobolev polynomials on the unit ball.
Numer. Algorithms
87 (2021), no. 4, 1369-1389.
MR4287895
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M. Marriaga, T. E. Pérez, M. A. Piñar,
Bivariate Koornwinder-Sobolev orthogonal polynomials.
Mediterr. J. Math.
18 (2021), no. 6, 234.
MR4320531
2016-2020
- F. Marcellán, M. E. Marriaga, T. E. Pérez, M. A. Piñar,
Geronimus transformations of bivariate linear functionals.
J. Math. Anal. Appl. 484 (2020), 123736, 30 pp.
MR4040130
- F. Marcellán, M. E. Marriaga, T. E. Pérez, M. A. Piñar,
Coherent pairs of bivariate orthogonal polynomilas
J. Approx. Theory 245 (2019), 40-63.
MR3945603
- A. M. Delgado, L. Fernández, T. E. Pérez,
Fourth order partial differential equations for Krall-type orthogonal polynomials on the triangle.
Proc. Amer. Math. Soc.
146 (2018), 3961-3974.
MR3825849
- F. Marcellán, M. Marriaga, T. E. Pérez, M. A. Piñar,
On bivariate classical orthogonal polynomials.
Appl. Math. Comput.
325 (2018), 340-357.
MR3759149
- F. Marcellán, M. Marriaga, T. E. Pérez, M. A. Piñar,
Matrix Pearson equations satisfied by Koornwinder weights in two variables.
Acta Appl. Math.
153 (2018), 81-100.
MR3745731
- C. F. Bracciali, T. E. Pérez,
Bivariate orthogonal polynomials, 2D Toda lattices and Lax-type pairs.
Appl. Math. Comput.
309 (2017), 142-155.
MR3646384
- M. Marriaga, T. E. Pérez, M. A. Piñar,
Three term relations for a class of bivariate polynomials.
Medit. J. Math.
14 (2017), no. 2, Art. 54, 26 pp.
MR3619416
- C. F. Bracciali, J. H. McCabe, T. E. Pérez, A. Sri Ranga,
A class of orthogonal functions given by a three term recurrence formula.
Math. Comp.
85 (2016), 1837-1859.
MR3471110
- A. M. Delgado, L. Fernández, D. S. Lubinsky, T. E. Pérez, M. A. Piñar,
Sobolev orthogonal polynomials on the unit ball via outward derivatives.
J. Math. Anal. Appl.
440 (2016), 716-740.
MR3484991
- A. M. Delgado, L. Fernández, T. E. Pérez, M. A. Piñar,
Multivariate orthogonal polynomials and modified moment functionals.
SIGMA Symmetry Integrability Geom. Methods Appl.
12 (2016), paper no. 090, 25 pp.
MR3545477
2011-2015
- L. Fernández, F. Marcellán, T. E. Pérez, M. Piñar, Y. Xu, Sobolev orthogonal polynomials on product domains. J. Comput. Appl. Math. 284 (2015), 202-215
MR3319504
- M. Alfaro, A. Peña, T. E. Pérez, M. L. Rezola, On linearly related orthogonal polynomials in several variables. Numer. Algorithms 66 (2014), 537-553.
MR3225001
- C. F. Bracciali, T. E. Pérez, M. Piñar, Stieltjes functions and discrete classical orthogonal polynomials. Comput. Appl. Math. 32 (2013), 537-547.
MR3120139
- T. E. Pérez, M. Piñar, Y. Xu, Weighted Sobolev orthogonal polynomials on the unit ball. J. Approx. Theory 171 (2013), 84-104.
MR3053718
- A. M. Delgado, T. E. Pérez, M. Piñar, Sobolev-type orthogonal polynomials on the unit ball. J. Approx. Theory 170 (2013), 94-106.
MR3044047
- A. M. Delgado, L. Fernández, T. E. Pérez, M. Piñar, On the Uvarov modification of two variable orthogonal polynomials on the disk. Complex Anal. Oper. Theory 6 (3) (2012), 665-676.
MR2944078
- L. Fernández, T. E. Pérez, M. Piñar, On Koornwinder classical orthogonal polynomials in two variables. J. Comput. Appl. Math. 236 (2012), 3817-3826.
MR2923514
- M. V. de Mello, V. G. Paschoa, T. E. Pérez, M. A. Piñar, Multivariate Sobolev-type orthogonal polynomials.
Jaen J. Approx. 3 (2011), 241-259.
MR2954375
- J. J. Moreno-Balcázar, T. E. Pérez, M. A. Piñar, A generating function for non-standard orthogonal polynomials involving differences: the Meixner case. Ramanujan J. 25 (1) (2011), 21-35.
MR2787289
- L. Fernández, T. E. Pérez, M. A. Piñar, Orthogonal polynomials in two variables as solutions of higher
order partial differential equations. J. Approx. Theory 163 (2011), 84-97.
MR2741221
2006-2010
- E. X. L. Andrade, C. F. Bracciali, M. V. de Mello, T. E. Pérez, Zeros for Jacobi-Sobolev orthogonal polynomials following non-coherent pair of measures. Comput. Appl. Math. 29 (2010), 423-445.
MR2740662
- C. F. Bracciali, A. M. Delgado, L. Fernández, T. E. Pérez, M. A. Piñar, New steps on Sobolev orthogonality in two variables. J. Comput. Appl. Math. 235 (2010), 916-926.
MR2727629
- A. M. Delgado, L. Fernández, T. E. Pérez, M. A. Piñar, Y. Xu, Orthogonal polynomials in several variables for measures with mass points. Numer. Algorithms 55 (2010), 245-264.
MR2720631
- L. Fernández, F. Marcellán, T. E. Pérez, M. A. Piñar, Recent Trends on Two Variable Orthogonal Polynomials Differential Algebra, Complex Analysis and Orthogonal Polynomials, P. Acosta-Humánez and F. Marcellán, eds. Contemporary Mathematics, 509, 59-86, American Mathematical Society, Providence, RI, 2010.
MR2647637
- L. Fernández, T. E. Pérez, M. A. Piñar, Y. Xu, Krall-type ortogonal polynomials in several variables. J. Comput. Appl. Math. 233 (2010), 1519-1524.
MR2559340
- M. Álvarez de Morales, L. Fernández, T. E. Pérez, M. A. Piñar,
Bivariate ortogonal polynomials in the Lyskova class. J. Comput. Appl. Math. 233 (2009), 597-601.
MR2582991
- M. Álvarez de Morales, L. Fernández, T. E. Pérez, M. A. Piñar, A matrix Rodrigues formula for classical orthogonal polynomials in two variables. J. Approx. Theory 157 (2009), 32-52.
MR2500152
- M. Álvarez de Morales, L. Fernández, T. E. Pérez, M. A. Piñar, A Stieltjes function in two variables. Approximation Theory XII: San Antonio 2007, 1-13, Nashboro Press, Brentwood, TN, 2008.
MR2537115
- M. Álvarez de Morales, L. Fernández, T. E. Pérez, M. A. Piñar, A semiclassical perspective on multivariate orthogonal polynomials. J. Comput. Appl. Math. 214 (2008), 447-456.
MR2398345
- M. Álvarez de Morales, L. Fernández, T. E. Pérez, M. A. Piñar, On differential properties for multivariate orthogonal polynomials. Numer. Algorithms 45 (2007), no. 1-4, 153-166.
MR2355979
- M. Álvarez de Morales,L. Fernández, T. E. Pérez, M. A. Piñar, Semiclassical orthogonal polynomials in two variables. J. Comput. Appl. Math. 207 (2007), 323-330.
MR2345250
- L. Fernández, T. E. Pérez, M. A. Piñar, Second--order partial differential equations for gradients of orthogonal polynomials in two variables. J. Comput. Appl. Math. 199 (2007), 113-121.
MR2267536
2001-2005
- L. Fernández, T. E. Pérez, M. A. Piñar, On multivariate classical orthogonal polynomials. Rend. Circ. Mat. Palermo (2) Suppl. No. 76 (2005), 315-329.
MR2178443
- L. Fernández, T. E. Pérez, M. A. Piñar, Classical orthogonal polynomials in two variables: a matrix approach. Numer. Algorithms 39 (2005), no. 1-3, 131-142.
MR2137747
- L. Fernández, T. E. Pérez, M. A. Piñar, Weak classical orthogonal polynomials in two variables. J. Comput. Appl. Math. 178 (2005), no. 1-2, 191-203.
MR2127879
- M. Álvarez de Morales, T. E. Pérez, M. A. Piñar, Orthogonal polynomials associated with a Delta-Sobolev inner product. J. Difference Equ. Appl. 8 (2002), no. 2, 125-151.
MR1882484
- M. Alfaro, J. J. Moreno-Balcázar, T. E. Pérez, M. A. Piñar, M. L. Rezola, Asymptotics of Sobolev orthogonal polynomials for Hermite coherent pairs. J. Comput. Appl. Math. 133 (2001), no. 1-2, 141-150.
MR1858274
1996-2000
- M. Álvarez de Morales, J. J. Moreno-Balcázar, T. E. Pérez, M. A. Piñar, Nondiagonal Hermite-Sobolev orthogonal polynomials. Acta Appl. Math. 61 (2000), no. 1-3, 257-266.
MR1783293
- E. García-Caballero, T. E. Pérez, M. A. Piñar, Hermite interpolation and Sobolev orthogonality. Acta Appl. Math. 61 (2000), no. 1-3, 87-99.
MR1783285
- M. Alfaro, M. L. Rezola, T. E. Pérez, M. A. Piñar, On symmetric differential operators associated with Sobolev orthogonal polynomials: a characterization. Acta Appl. Math. 61 (2000), no. 1-3, 3-14.
MR1783278
- H. G. Meijer, T. E. Pérez, M. A. Piñar, Asymptotics of Sobolev orthogonal polynomials for coherent pairs of Laguerre type. J. Math. Anal. Appl. 245 (2000), no. 2, 528-546.
MR1758554
- M. Alfaro, T. E. Pérez, M. A. Piñar, M. L. Rezola, Sobolev orthogonal polynomials: the discrete-continuous case. Methods Appl. Anal. 6 (1999), no. 4, 593-616.
MR1795525
- E. García-Caballero, T. E. Pérez, M. A. Piñar, Sobolev orthogonal polynomials: interpolation and approximation. Electron. Trans. Numer. Anal. 9 (1999), 56-64 (electronic).
MR1749798
- M. Álvarez de Morales, T. E. Pérez, M. A. Piñar, A. Ronveaux, Non-standard orthogonality for Meixner polynomials. Electron. Trans. Numer. Anal. 9 (1999), 1-25 (electronic).
MR1749794
- M. Álvarez de Morales, T. E. Pérez, M. A. Piñar, Sobolev orthogonality for the Gegenbauer polynomials {C^(-N+1/2)}_{n>0}. J. Comput. Appl. Math. 100 (1998), no. 1, 111-120.
MR1658734
- T. E. Pérez, M. A. Piñar, Sobolev orthogonality and properties of the generalized Laguerre polynomials. Orthogonal functions, moment theory, and continued fractions (Campinas, 1996), 375-385, Lecture Notes in Pure and Appl. Math., 199, Dekker, New York, 1998.
MR1655670
- M. Álvarez de Morales, T. E. Pérez, M. A. Piñar, A. Ronveaux, Orthogonal polynomials associated with a nondiagonal Sobolev inner product with polynomial coefficients. Orthogonal functions, moment theory, and continued fractions (Campinas, 1996), 343-358, Lecture Notes in Pure and Appl. Math., 199, Dekker, New York, 1998.
MR1655668
- A. Martínez-Finkelshtein, J. J. Moreno-Balcázar, T. E. Pérez, M. A. Piñar, Asymptotics of Sobolev orthogonal polynomials for coherent pairs of measures. J. Approx. Theory 92 (1998), no. 2, 280-293.
MR1604939
- F. Marcellán, H. G. Meijer, T. E. Pérez, M. A. Piñar, An asymptotic result for Laguerre-Sobolev orthogonal polynomials. J. Comput. Appl. Math. 87 (1997), no. 1, 87-94.
MR1488822
- T. E. Pérez, M. A. Piñar, On Sobolev orthogonality for the generalized Laguerre polynomials. J. Approx. Theory 86 (1996), no. 3, 278-285.
MR1405981
- F. Marcellán, T. E. Pérez, M. A. Piñar, Laguerre-Sobolev orthogonal polynomials. J. Comput. Appl. Math. 71 (1996), no. 2, 245-265.
MR1399895
- F. Marcellán, T. E. Pérez, M. A. Piñar, A. Ronveaux, General Sobolev orthogonal polynomials. J. Math. Anal. Appl. 200 (1996), no. 3, 614-634.
MR1393104
1991-1995
- F. Marcellán, J. C. Petronilho, T. E. Pérez, M. A. Piñar, What is beyond coherent pairs of orthogonal polynomials? J. Comput. Appl. Math. 65 (1995), no. 1-3, 267-277.
MR1379136
- F. Marcellán, T. E. Pérez, M. A. Piñar, Regular Sobolev type orthogonal polynomials: the Bessel case. Rocky Mountain J. Math. 25 (1995), no. 4, 1431-1457.
MR1371348
- F. Marcellán, T. E. Pérez, M. A. Piñar, Orthogonal polynomials on weighted Sobolev spaces: the semiclassical case. Special functions (Torino, 1993). Ann. Numer. Math. 2 (1995), no. 1-4, 93-122.
MR1343524
- F. Marcellán, T. E. Pérez, M. A. Piñar, Gegenbauer-Sobolev orthogonal polynomials. Nonlinear numerical methods and rational approximation, II (Wilrijk, 1993), 71-82, Math. Appl., 296, Kluwer Acad. Publ., Dordrecht, 1994.
MR1307190
- T. E. Pérez, M. A. Piñar, Global properties of zeros for Sobolev-type orthogonal polynomials. J. Comput. Appl. Math. 49 (1993), no. 1-3, 225-232.
MR1256030
- M. A. Piñar, T. E. Pérez, On higher order Padé-type approximants with some prescribed coefficients in the numerator. Numer. Algorithms 3 (1992), no. 1-4, 345-352.
MR1199381
- F. Marcellán, T. E. Pérez, M. A. Piñar, On zeros of Sobolev-type orthogonal polynomials. Rend. Mat. Appl. (7) 12 (1992), no. 2, 455-473.
MR1185903
- T. Pérez Fernández, M. Piñar González, Properties of the Bernstein-Jacobi operator in Cr[0,1]. (Spanish) Proceedings of the XVth Portuguese-Spanish Conference on Mathematics, Vol. V (Portuguese) (Évora, 1990), 143-148, Univ. Évora, Évora, 1991.
MR1161874
Other Publications (in Spanish)
- T. E. Pérez,
De Jornadas, Congresos, Mujeres y Matemáticas.
Boletín de la Titulación de Matemáticas de la UAL XI (2018), vol. 3, pág. 17-18 (publicacion digital).
- C. Aparicio del Prado, P. Martínez Amores, J. F. Mena Jurado, T. E. Pérez,
Breve historia de la Sección.
Matemáticas. 50 años en la Universidad de Granada,
11-15, Comisión Docente del Grado en Matemáticas. Granada, 2014.
- T. E. Pérez,
Cincuenta años: cinco planes.
Matemáticas. 50 años en la Universidad de Granada,
101-119, Comisión Docente del Grado en Matemáticas. Granada, 2014.
- T. E. Pérez, E. Santos Aláez, R. Raya Prida,
MIT: Mujeres en la Informática y la Telecomunicación.
Matematicalia
5 (2009), vol. 3 (publicacion digital).
- T. E. Pérez, E. Santos Aláez, R. Raya Prida,
¿Hay mujeres en los estudios de Informática y la Telecomunicación?
Boletín de la Titulación de Matemáticas de la UAL III (2010), vol. 3, pág. 11-12 (publicacion digital).
Editorial Activity
Dissemination
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MatEduca Project
Dissemination Project designed to show the research activity at IMAG, the Institute of Mathematics at the University of Granada. It offers activities aimed at secondary school students, with the goal of highlighting the value of mathematical research. On June 6, 2025, the MatEduca project received the UGR award for Scientific Dissemination, call 2024.
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Conference: Zernike polynomials: orthogonality to the rescue of Optics.
Annual National Congress of Students of Mathematics (ENEM 2025). Granada (Spain), July 22 - 27, 2025.
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Conference: Out of sight, out of mind... Math to the rescue!
Sciences Week at the Sciences Faculty of the University of Granada. November 13, 2023.
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Women in Computer and Telecommunication. Virtual Exhibition in Divulgamat, 2009.
Researching

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Researching at Oberwolfach MFO. July, 2019.
Open problems

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My family. Barranco de la Luna (Granada). August, 2018.