Guimarães, O.; Labecca, W.; Piqueira, José R. C. Solving 2nd order BVPs in planar irregular domains. (English) Zbl 07545892 Math. Comput. Simul. 201, 1-22 (2022). MSC: 65-XX 35-XX PDFBibTeX XMLCite \textit{O. Guimarães} et al., Math. Comput. Simul. 201, 1--22 (2022; Zbl 07545892) Full Text: DOI
Guimarães, O.; Labecca, W.; Piqueira, José Roberto C. Generalized operational matrices and error bounds for polynomial basis. (English) Zbl 1510.65034 Math. Comput. Simul. 172, 258-272 (2020). MSC: 65D15 41A10 PDFBibTeX XMLCite \textit{O. Guimarães} et al., Math. Comput. Simul. 172, 258--272 (2020; Zbl 1510.65034) Full Text: DOI
Labecca, William; Guimarães, Osvaldo; Piqueira, José Roberto C. Coadjoint formalism: nonorthogonal basis problems. (English) Zbl 1400.65040 Math. Probl. Eng. 2016, Article ID 9718962, 9 p. (2016). MSC: 65L99 34A45 41A58 33C45 PDFBibTeX XMLCite \textit{W. Labecca} et al., Math. Probl. Eng. 2016, Article ID 9718962, 9 p. (2016; Zbl 1400.65040) Full Text: DOI
Labecca, William; Guimarães, Osvaldo; Piqueira, José Roberto C. Analytical solution of general Bagley-Torvik equation. (English) Zbl 1394.34019 Math. Probl. Eng. 2015, Article ID 591715, 4 p. (2015). MSC: 34A08 34A25 PDFBibTeX XMLCite \textit{W. Labecca} et al., Math. Probl. Eng. 2015, Article ID 591715, 4 p. (2015; Zbl 1394.34019) Full Text: DOI
Labecca, William; Guimarães, Osvaldo; Piqueira, José Roberto C. Dirac’s formalism combined with complex Fourier operational matrices to solve initial and boundary value problems. (English) Zbl 1510.65172 Commun. Nonlinear Sci. Numer. Simul. 19, No. 8, 2614-2623 (2014). MSC: 65L60 34A45 PDFBibTeX XMLCite \textit{W. Labecca} et al., Commun. Nonlinear Sci. Numer. Simul. 19, No. 8, 2614--2623 (2014; Zbl 1510.65172) Full Text: DOI
Guimarães, Osvaldo; Piqueira, José Roberto C. Error upper bounds for a computational method for nonlinear boundary and initial-value problems. (English) Zbl 1264.65147 Math. Probl. Eng. 2012, Article ID 565896, 12 p. (2012). MSC: 65M15 PDFBibTeX XMLCite \textit{O. Guimarães} and \textit{J. R. C. Piqueira}, Math. Probl. Eng. 2012, Article ID 565896, 12 p. (2012; Zbl 1264.65147) Full Text: DOI
Guimarães, Osvaldo; Piqueira, José Roberto C.; Netto, Marcio Lobo Direct computation of operational matrices for polynomial bases. (English) Zbl 1198.65121 Math. Probl. Eng. 2010, Article ID 139198, 12 p. (2010). MSC: 65L10 34B05 PDFBibTeX XMLCite \textit{O. Guimarães} et al., Math. Probl. Eng. 2010, Article ID 139198, 12 p. (2010; Zbl 1198.65121) Full Text: DOI EuDML