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Computational methods for inverses of tridiagonal matrices

Grant number: 17/07767-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2017
Effective date (End): May 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Mathematics - Applied Mathematics
Principal Investigator:Cassio Machiaveli Oishi
Grantee:Fabio Vinicius Goes Amaral
Home Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil
Associated research grant:13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry, AP.CEPID


In this project, we will analyses theoretical aspects and we will implement computational methods for computing inverses of tridiagonal matrices. In the first stage of this project, the study will be directed for a special type of tridiagonal matrices: Symmetric and Positive Definite (SPD). The student will investigate a matrix decomposition which can be applied for efficiently obtaining an inverse of a SPD matrix. This strategy, which is known as Conjugate Decomposition, was recently proposed in the literature, and it will be carefully analyzed in this research project. Finally, the subsequent stage will consisting the study of explicit formulas for computing the inverses of generalized tridiagonal matrices. Theoretical analyses will be supplemented with numerical solutions in order to give more knowledge for the student in the scientific computing area.