Author: Yamamoto, Yusaku

Fukuda, Akiko; Yamamoto, Yusaku; Iwasaki, Masashi; Ishiwata, Emiko; Nakamura, Yoshimasa: Convergence acceleration of shifted $LR$ transformations for totally nonnegative Hessenberg matrices. (English). Applications of Mathematics, vol. 65 (2020), issue 5, pp. 677-702
Yamamoto, Yusaku: On the optimality and sharpness of Laguerre's lower bound on the smallest eigenvalue of a symmetric positive definite matrix. (English). Applications of Mathematics, vol. 62 (2017), issue 4, pp. 319-331