Cláudio António Raínha Aires Fernandes

2022

Fourier Convolution Operators with Symbols Equivalent to Zero at Infinity on Banach Function Spaces

Fernandes, C. A., Karlovich, A. Y. & Karlovich, Y. I., 2022, Current Trends in Analysis, its Applications and Computation: Proceedings of the 12th ISAAC Congress, Aveiro, Portugal, 2019. Cerejeiras, P., Reissig, M., Sabadini, I. & Toft, J. (eds.). Cham: Springer, p. 335-343 9 p. (Trends in Mathematics).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

INVERTIBILITY OF FOURIER CONVOLUTION OPERATORS WITH PC SYMBOLS ON VARIABLE LEBESGUE SPACES WITH KHVEDELIDZE WEIGHTS

Fernandes, C., Karlovych, O. & Medalha, S., 10 Oct 2022, In: Journal of Mathematical Sciences (United States). 16 p.

Research output: Contribution to journal › Article › peer-review

On C*-algebras of singular integral operators with PQC coefficients and shifts with fixed points

Bastos, M. A., Fernandes, C. A. & Karlovich, Y. I., 4 Mar 2022, In: Complex Variables and Elliptic Equations. 67, 3(SI), p. 581-614

Research output: Contribution to journal › Article › peer-review

ON THE DENSITY OF LAGUERRE FUNCTIONS IN SOME BANACH FUNCTION SPACES

Fernandes, C., Karlovych, O. & Valente, M., 2022, In: Journal of Inequalities and Special Functions. 13, 2, p. 37-45 9 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

2021

Banach algebras of Fourier multipliers equivalent at infinity to nice Fourier multipliers

Fernandes, C. A., Karlovich, A. Y. & Karlovich, Y. I., Apr 2021, In: Banach Journal Of Mathematical Analysis. 15, 2, 29.

Research output: Contribution to journal › Article › peer-review

Open Access

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36 Downloads (Pure)

Calkin Images of Fourier Convolution Operators with Slowly Oscillating Symbols

Fernandes, C. A., Karlovich, A. Y. & Karlovich, Y. I., 2021, Operator Theory: Advances and Applications. Bastos, M. A., Castro, L. & Karlovich, A. Y. (eds.). Cham: Birkhäuser/Springer, p. 193-218 26 p. (Operator Theory: Advances and Applications; vol. 282).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

4 Citations (Scopus)

Invertibility of fourier convolution operators with piecewise continuous symbols on banach function spaces

Fernandes, C., Karlovych, A. & Valente, M., Apr 2021, In: Transactions of A. Razmadze Mathematical Institute. 175, 1, p. 49-61 13 p.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

2020

Semi-almost periodic Fourier multipliers on rearrangement-invariant spaces with suitable Muckenhoupt weights

Fernandes, C. A. & Karlovich, A. Y., 1 Nov 2020, In: Boletin de la Sociedad Matematica Mexicana. 26, 3, p. 1135-1162

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

2019

Algebra of convolution type operators with continuous data on Banach function spaces

Fernandes, C. A., Karlovych, A. & Karlovich, Y. I., 2019, Banach Center Publications. Polish Academy of Sciences, Vol. 119. p. 157-171

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Invertibility Criteria in C ^∗ -algebras of Functional Operators with Shifts and PQC Coefficients

Bastos, M. A., Fernandes, C. A. & Karlovich, Y. I., 1 Jun 2019, In: Integral Equations And Operator Theory. 91, 3, 19.

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Noncompactness of Fourier convolution operators on Banach function spaces

Fernandes, C. A., Karlovich, A. & Karlovich, Y. I., Nov 2019, In: Annals of functional analysis. 10, 4, p. 553-561

Research output: Contribution to journal › Article › peer-review

2018

A C^∗-algebra of Singular Integral Operators with Shifts and Piecewise Quasicontinuous Coefficients

Bastos, M. A., Fernandes, C. A. & Karlovich, Y. I., 1 Jan 2018, Operator Theory: Advances and Applications. Springer International Publishing, p. 25-64 40 p. (Operator Theory: Advances and Applications; vol. 267).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Open Access

File

28 Downloads (Pure)

MATER, Matemática do Planeta Terra: Retrospectiva de uma Exposição

Soares, M. D. C., Doutor, P. J. F. L. R., Fernandes, C. A., Trabucho, L. & Rodrigues, F., 2018, 2nd ed. Caparica: FCT-UNL.

Research output: Book/Report › Book

2015

MATER, Matemática do Planeta Terra, Retrospectiva de uma Exposição.

Campos, L. M. T. D., Fernandes, C. A. R. A., Rodrigues, M. D. F. V. D. G. S., Soares, M. D. C. C. & Doutor, P. J. F. L. R., 2015, FCT-UNL.

Research output: Book/Report › Book

2014

A C*-algebra of singular integral operators with shifts admitting distinct fixed points

Bastos, M. A., Fernandes, C. A. & Karlovich, Y. I., 1 May 2014, In: Journal of Mathematical Analysis and Applications. 413, 1, p. 502-524 23 p.

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

A C*-algebra of singular integral operators with shifts similar to affine mappings

Bastos, M. A., Fernandes, C. A. & Karlovich, Y. I., 2014, Operator Theory: Advances and Applications. Springer International Publishing, p. 53-79 27 p. (Operator Theory: Advances and Applications; vol. 242).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review