Researcher Database | Faculty of Engineering Department of Electrical and Electronic Engineering | Kazuyoshi Yokoyama |

（Last updated : 2023-11-15 08:46:31）

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Kazuyoshi Yokoyama

Department / Course Hokkaido University of Science Faculty of Engineering Department of Electrical and Electronic Engineering

Job Professor

Academic background
1998/09 Degree Acquisition
1995/03 Degree Acquisition

Present specialized field
Others

Book and thesis
Papers	Global existence for null-form wave equations with data in a Sobolev space of lower regularity and weight Hokkaido Mathematical Journal 52 (2),pp.197-251 (Co-authored) 2023
Papers	Global existence for a system of multiple-speed wave equations violating the null condition Tohoku Mathematical Journal 74 (4),pp.597-626 (Co-authored) 2022/12
Papers	Global existence and blow up for systems of nonlinear wave equations related to the weak null condition Discrete and Continuous Dynamical Systems 42 (9),pp.4385-4414 (Co-authored) 2022/09
Papers	Global Existence for a System of Quasi-Linear Wave Equations in 3D Satisfying the Weak Null Condition International Mathematics Research Notices. IMRN, Vol. 2020,pp.39-70 (Co-authored) 2020/01
Papers	Combined effects of two nonlinearities in lifespan of small solutions to semi-linear wave equations Mathematische Annalen, Vol. 366 (No. 1-2.),pp.667-694 (Co-authored) 2016/07
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