Thomás Jung Spier

Orthogonal polynomials, quantum walks and the Prouhet–Tarry–Escott problem

F Cançado, G Coutinho, TJ Spier

PreprintarXivBibTeXCite

The spectrum of symmetric decorated paths

G Coutinho, E Juliano, TJ Spier

Linear Algebra and Its Applications 2025arXivPaperBibTeXCite

Unsupervised Hierarchical Sequence Stratigraphy Framework of Carbonate Successions

MVS Dantas, KHM Vieira, TJ Spier, JAO Santos, ACT Prado, D Vomlel, M Leite, FA Farias, DGC Fragoso, H Reis, G Coutinho, DG Macharet

Artificial Inteligence in Geosciences 2025PaperBibTeXCite

Conic programming to understand sums of squares of eigenvalues of graphs

G Coutinho, TJ Spier, S Zhang

PreprintarXivBibTeXCite

(this paper heavily supersedes the earlier preprint by Thomás and I)

No perfect state transfer in trees with more than 3 vertices

G Coutinho, E Juliano, TJ Spier

Journal of Combinatorial Theory Series B 2024DOIarXivBibTeXCite

Constructing high-resolution stratigraphic frameworks by the application of signal analysis techniques: Example of Balbuena IV Sequence, Yacoraite Formation, Salta Basin

JAO Santos, A Uhlein, MVS Dantas, G Coutinho, TJ Spier, KHM Vieira, ACT Prado, D Macharet, GJ Uhlein, T Novo, H Reis, FA Farias, EB Freire, DGC Fragoso

Marine and Petroleum Geology 2023PaperBibTeXCite

Irrational quantum walks

G Coutinho, PF Baptista, C Godsil, TJ Spier, R Werner

SIAM Journal of Applied Algebra and Geometry 2023DOIarXivBibTeXCite

Strong cospectrality in trees

G Coutinho, E Juliano, TJ Spier

Algebraic Combinatorics 2023DOIarXivBibTeXCite