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Future seminars
Seminar information archive ～11/04｜Today's seminar 11/05 | Future seminars 11/06～
2026/12/04
Lectures
13:00-14:45 Room #123 (Graduate School of Math. Sci. Bldg.)
Intensive Lecture: Special Topics in Mathematical Sciences II (Six sessions on 11/06,13,20,27, 12/04,11)
Chun-Hsiung Hsia (National Taiwan University)
The mathematical analysis of the kinetic theory (ENGLISH)
Intensive Lecture: Special Topics in Mathematical Sciences II (Six sessions on 11/06,13,20,27, 12/04,11)
Chun-Hsiung Hsia (National Taiwan University)
The mathematical analysis of the kinetic theory (ENGLISH)
[ Abstract ]
The existence theory and the regularity theory are two important issues in the study of PDE problems. To establish the existence theory, one can resort to:
(1)the compactness of the solution operator to apply fixed point arguments or contraction mapping arguments
(2)the existence theory by functional analysis, for example: the Fredholm alternative, the method of continuity, semigroup theory, .. etc.
The regularity theory seems to be the next issue after one obtains the existence theory. In fact, the regularity can help to establish the compactness of solution operators, and therefore helps to establish the existence theory. In this course, we have shall reveal the aforementioned theory and apply this framework to investigate the Boltzmann equations.
The existence theory and the regularity theory are two important issues in the study of PDE problems. To establish the existence theory, one can resort to:
(1)the compactness of the solution operator to apply fixed point arguments or contraction mapping arguments
(2)the existence theory by functional analysis, for example: the Fredholm alternative, the method of continuity, semigroup theory, .. etc.
The regularity theory seems to be the next issue after one obtains the existence theory. In fact, the regularity can help to establish the compactness of solution operators, and therefore helps to establish the existence theory. In this course, we have shall reveal the aforementioned theory and apply this framework to investigate the Boltzmann equations.
2026/12/07
Operator Algebra Seminars
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Akihiro Miyagawa (Kyoto University)
TBA
Akihiro Miyagawa (Kyoto University)
TBA
2026/12/08
Seminar on Mathematics for various disciplines
10:30-11:30 Room #056 (Graduate School of Math. Sci. Bldg.)
Prashant Athavale (Clarkson University)
Total Variation Methods for Denoising and Inpainting Crystallographic Orientation Maps (English)
Prashant Athavale (Clarkson University)
Total Variation Methods for Denoising and Inpainting Crystallographic Orientation Maps (English)
[ Abstract ]
Electron backscatter diffraction (EBSD) provides spatial maps of crystal orientations in polycrystalline materials. These measurements often contain noise and missing data, complicating the identification of grains and their boundaries. In this talk, I will introduce the mathematical challenges of restoring orientation maps and present our work on total variation methods for denoising and hybrid methods for filling missing regions. Particular attention will be given to preserving grain boundaries while recovering useful microstructural information. I will also discuss ongoing work on using shape tensors and statistical comparisons of grain geometry to guide stopping criteria for denoising flows. The presentation will emphasize connections between variational methods, geometric representations, and materials imaging.
Electron backscatter diffraction (EBSD) provides spatial maps of crystal orientations in polycrystalline materials. These measurements often contain noise and missing data, complicating the identification of grains and their boundaries. In this talk, I will introduce the mathematical challenges of restoring orientation maps and present our work on total variation methods for denoising and hybrid methods for filling missing regions. Particular attention will be given to preserving grain boundaries while recovering useful microstructural information. I will also discuss ongoing work on using shape tensors and statistical comparisons of grain geometry to guide stopping criteria for denoising flows. The presentation will emphasize connections between variational methods, geometric representations, and materials imaging.
2026/12/11
Lectures
13:00-14:45 Room #123 (Graduate School of Math. Sci. Bldg.)
Intensive Lecture: Special Topics in Mathematical Sciences II (Six sessions on 11/06,13,20,27, 12/04,11)
Chun-Hsiung Hsia (National Taiwan University)
The mathematical analysis of the kinetic theory (ENGLISH)
Intensive Lecture: Special Topics in Mathematical Sciences II (Six sessions on 11/06,13,20,27, 12/04,11)
Chun-Hsiung Hsia (National Taiwan University)
The mathematical analysis of the kinetic theory (ENGLISH)
[ Abstract ]
The existence theory and the regularity theory are two important issues in the study of PDE problems. To establish the existence theory, one can resort to:
(1)the compactness of the solution operator to apply fixed point arguments or contraction mapping arguments
(2)the existence theory by functional analysis, for example: the Fredholm alternative, the method of continuity, semigroup theory, .. etc.
The regularity theory seems to be the next issue after one obtains the existence theory. In fact, the regularity can help to establish the compactness of solution operators, and therefore helps to establish the existence theory. In this course, we have shall reveal the aforementioned theory and apply this framework to investigate the Boltzmann equations.
The existence theory and the regularity theory are two important issues in the study of PDE problems. To establish the existence theory, one can resort to:
(1)the compactness of the solution operator to apply fixed point arguments or contraction mapping arguments
(2)the existence theory by functional analysis, for example: the Fredholm alternative, the method of continuity, semigroup theory, .. etc.
The regularity theory seems to be the next issue after one obtains the existence theory. In fact, the regularity can help to establish the compactness of solution operators, and therefore helps to establish the existence theory. In this course, we have shall reveal the aforementioned theory and apply this framework to investigate the Boltzmann equations.
2026/12/14
Operator Algebra Seminars
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Yuki Arano (Nagoya University)
Prime actions of compact groups on von Neumann algebras
Yuki Arano (Nagoya University)
Prime actions of compact groups on von Neumann algebras
2026/12/18
Algebraic Geometry Seminar
13:15-14:45 Room #118 (Graduate School of Math. Sci. Bldg.)
Yutaro Hiroi (University of Osaka)
TBA
Yutaro Hiroi (University of Osaka)
TBA
[ Abstract ]
TBA
TBA
2026/12/21
Operator Algebra Seminars
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Mutsuki Kobashikawa (The University of Tokyo)
TBA
Mutsuki Kobashikawa (The University of Tokyo)
TBA
2027/01/18
Operator Algebra Seminars
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Katsunori Fujie (Aichi Prefectural University)
TBA
Katsunori Fujie (Aichi Prefectural University)
TBA
2027/02/01
Operator Algebra Seminars
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Ikhan Choi (The University of Tokyo)
Analytic Kasparov product for non-separable C*-algebras
Ikhan Choi (The University of Tokyo)
Analytic Kasparov product for non-separable C*-algebras
