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Seminar information archive
Seminar information archive ～12/08｜Today's seminar 12/09 | Future seminars 12/10～
Tuesday Seminar on Topology
16:30-17:30 Room #002 (Graduate School of Math. Sci. Bldg.)
野澤 啓 (東京大学大学院数理科学研究科)
Five dimensional $K$-contact manifolds of rank 2
野澤 啓 (東京大学大学院数理科学研究科)
Five dimensional $K$-contact manifolds of rank 2
[ Abstract ]
A $K$-contact manifold is an odd dimensional manifold $M$ with a contact form $\\alpha$ whose Reeb flow preserves a Riemannian metric on $M$. For examples, the underlying manifold with the underlying contact form of a Sasakian manifold is $K$-contact. In this talk, we will state our results on classification up to surgeries, the existence of compatible Sasakian metrics and a sufficient condition to be toric for closed $5$-dimensional $K$-contact manifolds with a $T^2$ action given by the closure of the Reeb flow, which are obtained by the application of Morse theory to the contact moment map for the $T^2$ action.
A $K$-contact manifold is an odd dimensional manifold $M$ with a contact form $\\alpha$ whose Reeb flow preserves a Riemannian metric on $M$. For examples, the underlying manifold with the underlying contact form of a Sasakian manifold is $K$-contact. In this talk, we will state our results on classification up to surgeries, the existence of compatible Sasakian metrics and a sufficient condition to be toric for closed $5$-dimensional $K$-contact manifolds with a $T^2$ action given by the closure of the Reeb flow, which are obtained by the application of Morse theory to the contact moment map for the $T^2$ action.
Tuesday Seminar on Topology
17:30-18:30 Room #002 (Graduate School of Math. Sci. Bldg.)
中村 伊南沙 (東京大学大学院数理科学研究科)
Surface links which are coverings of a trivial torus knot (JAPANESE)
中村 伊南沙 (東京大学大学院数理科学研究科)
Surface links which are coverings of a trivial torus knot (JAPANESE)
[ Abstract ]
We consider surface links which are in the form of coverings of a
trivial torus knot, which we will call torus-covering-links.
By definition, torus-covering-links include
spun $T^2$-knots, turned spun $T^2$-knots, and symmetry-spun tori.
We see some properties of torus-covering-links.
We consider surface links which are in the form of coverings of a
trivial torus knot, which we will call torus-covering-links.
By definition, torus-covering-links include
spun $T^2$-knots, turned spun $T^2$-knots, and symmetry-spun tori.
We see some properties of torus-covering-links.
2009/01/19
Seminar on Geometric Complex Analysis
10:30-12:00 Room #128 (Graduate School of Math. Sci. Bldg.)
金子 宏 (東京理科大理)
確率論的視点による単位円周の双対としてのp進整数環の考察
金子 宏 (東京理科大理)
確率論的視点による単位円周の双対としてのp進整数環の考察
2009/01/16
Lecture Series on Mathematical Sciences in Soceity
16:20-17:50 Room #128 (Graduate School of Math. Sci. Bldg.)
渡辺 秀明 (防衛省技術研究本部電子装備研究所)
防衛電子技術についてⅠ
渡辺 秀明 (防衛省技術研究本部電子装備研究所)
防衛電子技術についてⅠ
2009/01/15
Operator Algebra Seminars
16:30-18:00 Room #126 (Graduate School of Math. Sci. Bldg.)
Alin Ciuperca (Univ. Toronto)
Isomorphism of Hilbert modules over stably finite $C^*$-algebras
Alin Ciuperca (Univ. Toronto)
Isomorphism of Hilbert modules over stably finite $C^*$-algebras
Applied Analysis
16:00-17:30 Room #002 (Graduate School of Math. Sci. Bldg.)
木村 正人 (九州大学・大学院数理学研究院)
On a phase field model for mode III crack growth
木村 正人 (九州大学・大学院数理学研究院)
On a phase field model for mode III crack growth
[ Abstract ]
2次元弾性体の面外変形による亀裂の進展を記述する,ある
フェイズ・フィールド・モデルについて考える.モデルの
導出は,Francfort-Marigoによる拡張された意味での
Griffithの破壊基準をもとに,Ambrosio-Tortorelliに
よるエネルギー正則化のアイデアを用いてなされる.
現状で得られている数学的な結果と,適合型メッシュを
用いた有限要素シミュレーション例についての紹介も行う.
本研究は高石武史(広島国際学院大学)との共同研究である.
2次元弾性体の面外変形による亀裂の進展を記述する,ある
フェイズ・フィールド・モデルについて考える.モデルの
導出は,Francfort-Marigoによる拡張された意味での
Griffithの破壊基準をもとに,Ambrosio-Tortorelliに
よるエネルギー正則化のアイデアを用いてなされる.
現状で得られている数学的な結果と,適合型メッシュを
用いた有限要素シミュレーション例についての紹介も行う.
本研究は高石武史(広島国際学院大学)との共同研究である.
Operator Algebra Seminars
16:30-18:00 Room #126 (Graduate School of Math. Sci. Bldg.)
Alin Ciuperca (Univ. Toronto)
Isomorphism of Hilbert modules over stably finite $C^*$-algebras
Alin Ciuperca (Univ. Toronto)
Isomorphism of Hilbert modules over stably finite $C^*$-algebras
Lie Groups and Representation Theory
13:30-17:20 Room #050 (Graduate School of Math. Sci. Bldg.)
柏原正樹 (京都大学数理解析研究所) 13:30-14:30
Quantization of complex manifolds
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~toshi/index.files/oshima60th200901.html
小林俊行 (東京大学大学院数理科学研究科) 15:00-16:00
Global geometry on locally symmetric spaces — beyond the Riemannian case
Classification of Fuchsian systems and their connection problem
柏原正樹 (京都大学数理解析研究所) 13:30-14:30
Quantization of complex manifolds
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~toshi/index.files/oshima60th200901.html
小林俊行 (東京大学大学院数理科学研究科) 15:00-16:00
Global geometry on locally symmetric spaces — beyond the Riemannian case
[ Abstract ]
The local to global study of geometries was a major trend of 20th century geometry, with remarkable developments achieved particularly in Riemannian geometry.
In contrast, in areas such as Lorentz geometry, familiar to us as the space-time of relativity theory, and more generally in pseudo-Riemannian geometry, as well as in various other kinds of geometry (symplectic, complex geometry, ...), surprising little is known about global properties of the geometry even if we impose a locally homogeneous structure.
In this talk, I plan to give an exposition on the recent developments on the question about the global natures of locally non-Riemannian homogeneous spaces, with emphasis on the existence problem of compact forms, rigidity and deformation.
大島利雄 (東京大学大学院数理科学研究科) 16:20-17:20The local to global study of geometries was a major trend of 20th century geometry, with remarkable developments achieved particularly in Riemannian geometry.
In contrast, in areas such as Lorentz geometry, familiar to us as the space-time of relativity theory, and more generally in pseudo-Riemannian geometry, as well as in various other kinds of geometry (symplectic, complex geometry, ...), surprising little is known about global properties of the geometry even if we impose a locally homogeneous structure.
In this talk, I plan to give an exposition on the recent developments on the question about the global natures of locally non-Riemannian homogeneous spaces, with emphasis on the existence problem of compact forms, rigidity and deformation.
Classification of Fuchsian systems and their connection problem
[ Abstract ]
We explain a classification of Fuchsian systems on the Riemann sphere together with Katz's middle convolution, Yokoyama's extension and their relation to a Kac-Moody root system discovered by Crawley-Boevey.
Then we present a beautifully unified connection formula for the solution of the Fuchsian ordinary differential equation without moduli and apply the formula to the harmonic analysis on a symmetric space.
We explain a classification of Fuchsian systems on the Riemann sphere together with Katz's middle convolution, Yokoyama's extension and their relation to a Kac-Moody root system discovered by Crawley-Boevey.
Then we present a beautifully unified connection formula for the solution of the Fuchsian ordinary differential equation without moduli and apply the formula to the harmonic analysis on a symmetric space.
2009/01/14
Lectures
16:00-17:30 Room #002 (Graduate School of Math. Sci. Bldg.)
片山 統裕 (東北大学 大学院情報科学研究科 応用情報科学専攻)
中枢ニューロン樹状突起における酵素活性化ウェーブとその数理モデル
片山 統裕 (東北大学 大学院情報科学研究科 応用情報科学専攻)
中枢ニューロン樹状突起における酵素活性化ウェーブとその数理モデル
[ Abstract ]
ニューロンの興奮性の調節やシナプス可塑性において重要な役割を担っているC型タンパク質リン酸化酵素(PKC)は,その酵素活性と関連して細胞内局在が変化する性質を有する(トランスロケーション).GFP-γPKC融合タンパクを発現させたマウス小脳プルキンエ細胞において,平行線維シナプスの高頻度刺激に伴い,刺激部位近傍から樹状突起に沿ってトランスロケーションが伝播する現象が報告されている.最近,坪川は,同じ刺激条件で樹状突起内をほぼ同速度で伝播する細胞内Ca2+波が生じることを見出し,これがγPKCトランスロケーション波をリードしている可能性を指摘した.本研究では,生理学的・解剖学的知見に基づいたプルキンエ細胞の数理モデルを構築し,Ca2+波の再現を試みた.その結果に基づき,トランスロケーション伝播のメカニズムと機能的意義について考察する.
ニューロンの興奮性の調節やシナプス可塑性において重要な役割を担っているC型タンパク質リン酸化酵素(PKC)は,その酵素活性と関連して細胞内局在が変化する性質を有する(トランスロケーション).GFP-γPKC融合タンパクを発現させたマウス小脳プルキンエ細胞において,平行線維シナプスの高頻度刺激に伴い,刺激部位近傍から樹状突起に沿ってトランスロケーションが伝播する現象が報告されている.最近,坪川は,同じ刺激条件で樹状突起内をほぼ同速度で伝播する細胞内Ca2+波が生じることを見出し,これがγPKCトランスロケーション波をリードしている可能性を指摘した.本研究では,生理学的・解剖学的知見に基づいたプルキンエ細胞の数理モデルを構築し,Ca2+波の再現を試みた.その結果に基づき,トランスロケーション伝播のメカニズムと機能的意義について考察する.
2009/01/13
Lectures
10:30-11:30 Room #002 (Graduate School of Math. Sci. Bldg.)
Gieri Simonett (Vanderbilt University, USA)
Analytic semigroups, maximal regularity and nonlinear parabolic problems
[ Reference URL ]
http://www.math.sci.hokudai.ac.jp/sympo/090113/index.html
Gieri Simonett (Vanderbilt University, USA)
Analytic semigroups, maximal regularity and nonlinear parabolic problems
[ Reference URL ]
http://www.math.sci.hokudai.ac.jp/sympo/090113/index.html
Tuesday Seminar on Topology
16:30-17:30 Room #002 (Graduate School of Math. Sci. Bldg.)
山下 温 (東京大学大学院数理科学研究科)
Compactification of the homeomorphism group of a graph
山下 温 (東京大学大学院数理科学研究科)
Compactification of the homeomorphism group of a graph
[ Abstract ]
Topological properties of homeomorphism groups, especially of finite-dimensional manifolds,
have been of interest in the area of infinite-dimensional manifold topology.
For a locally finite graph $\\Gamma$ with countably many components,
the homeomorphism group $\\mathcal{H}(\\Gamma)$
and its identity component $\\mathcal{H}_+(\\Gamma)$ are topological groups
with respect to the compact-open topology. I will define natural compactifications
$\\overline{\\mathcal{H}}(\\Gamma)$ and
$\\overline{\\mathcal{H}}_+(\\Gamma)$ of these groups and describe the
topological type of the pair $(\\overline{\\mathcal{H}}_+(\\Gamma), \\mathcal{H}_+(\\Gamma))$
using the data of $\\Gamma$. I will also discuss the topological structure of
$\\overline{\\mathcal{H}}(\\Gamma)$ where $\\Gamma$ is the circle.
Topological properties of homeomorphism groups, especially of finite-dimensional manifolds,
have been of interest in the area of infinite-dimensional manifold topology.
For a locally finite graph $\\Gamma$ with countably many components,
the homeomorphism group $\\mathcal{H}(\\Gamma)$
and its identity component $\\mathcal{H}_+(\\Gamma)$ are topological groups
with respect to the compact-open topology. I will define natural compactifications
$\\overline{\\mathcal{H}}(\\Gamma)$ and
$\\overline{\\mathcal{H}}_+(\\Gamma)$ of these groups and describe the
topological type of the pair $(\\overline{\\mathcal{H}}_+(\\Gamma), \\mathcal{H}_+(\\Gamma))$
using the data of $\\Gamma$. I will also discuss the topological structure of
$\\overline{\\mathcal{H}}(\\Gamma)$ where $\\Gamma$ is the circle.
2009/01/12
Lie Groups and Representation Theory
16:30-18:00 Room #126 (Graduate School of Math. Sci. Bldg.)
西岡斉治 (東京大学大学院数理科学研究科博士課程)
代数的差分方程式の可解性と既約性
西岡斉治 (東京大学大学院数理科学研究科博士課程)
代数的差分方程式の可解性と既約性
[ Abstract ]
差分代数の理論を使って,代数的差分方程式の代数函数解や超幾
何函数解の非存在や,存在する場合の特殊解の分類をする。
差分代数の理論を使って,代数的差分方程式の代数函数解や超幾
何函数解の非存在や,存在する場合の特殊解の分類をする。
Tuesday Seminar of Analysis
16:30-18:00 Room #128 (Graduate School of Math. Sci. Bldg.)
Jacob S. Christiansen
(コペンハーゲン大学)
Finite gap Jacobi matrices (joint work with Barry Simon and Maxim Zinchenko)
Jacob S. Christiansen
(コペンハーゲン大学)
Finite gap Jacobi matrices (joint work with Barry Simon and Maxim Zinchenko)
2009/01/09
GCOE lecture series
17:00-18:00 Room #123 (Graduate School of Math. Sci. Bldg.)
Eric Opdam (University of Amsterdam)
The spectral category of Hecke algebras and applications 第2講 Affine Hecke algebras and harmonic analysis.
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~toshi/seminar/ut-seminar2009.html#20090108opdam
Eric Opdam (University of Amsterdam)
The spectral category of Hecke algebras and applications 第2講 Affine Hecke algebras and harmonic analysis.
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~toshi/seminar/ut-seminar2009.html#20090108opdam
Lectures
16:00-17:00 Room #370 (Graduate School of Math. Sci. Bldg.)
Leevan Ling (Hong Kong Baptist University)
Effective Condition Numbers and Laplace Equations
Leevan Ling (Hong Kong Baptist University)
Effective Condition Numbers and Laplace Equations
[ Abstract ]
The condition number of a matrix is commonly used for investigating the
stability of solutions to linear algebraic systems. Recent meshless
techniques for solving PDEs have been known to give rise to
ill-conditioned matrices, yet are still able to produce results that are
close to machine accuracy. In this work, we consider the method of
fundamental solutions (MFS), which is known to solve, with extremely high
accuracy, certain
partial differential equations, namely those for which a fundamental
solution is known. To investigate the applicability of the MFS, either when
the boundary is not analytic or when the boundary data is not harmonic, we
examine the relationship between its accuracy and the effective condition
number.
The condition number of a matrix is commonly used for investigating the
stability of solutions to linear algebraic systems. Recent meshless
techniques for solving PDEs have been known to give rise to
ill-conditioned matrices, yet are still able to produce results that are
close to machine accuracy. In this work, we consider the method of
fundamental solutions (MFS), which is known to solve, with extremely high
accuracy, certain
partial differential equations, namely those for which a fundamental
solution is known. To investigate the applicability of the MFS, either when
the boundary is not analytic or when the boundary data is not harmonic, we
examine the relationship between its accuracy and the effective condition
number.
GCOE Seminars
16:00-17:00 Room #370 (Graduate School of Math. Sci. Bldg.)
Leevan Ling (Hong Kong Baptist University)
Effective Condition Numbers and Laplace Equations
Leevan Ling (Hong Kong Baptist University)
Effective Condition Numbers and Laplace Equations
[ Abstract ]
The condition number of a matrix is commonly used for investigating the stability of solutions to linear algebraic systems. Recent meshless techniques for solving PDEs have been known to give rise to ill-conditioned matrices, yet are still able to produce results that are close to machine accuracy. In this work, we consider the method of fundamental solutions (MFS), which is known to solve, with extremely high accuracy, certain partial differential equations, namely those for which a fundamental solution is known. To investigate the applicability of the MFS, either when the boundary is not analytic or when the boundary data is not harmonic, we examine the relationship between its accuracy and the effective condition number.
The condition number of a matrix is commonly used for investigating the stability of solutions to linear algebraic systems. Recent meshless techniques for solving PDEs have been known to give rise to ill-conditioned matrices, yet are still able to produce results that are close to machine accuracy. In this work, we consider the method of fundamental solutions (MFS), which is known to solve, with extremely high accuracy, certain partial differential equations, namely those for which a fundamental solution is known. To investigate the applicability of the MFS, either when the boundary is not analytic or when the boundary data is not harmonic, we examine the relationship between its accuracy and the effective condition number.
2009/01/08
Operator Algebra Seminars
16:30-18:00 Room #128 (Graduate School of Math. Sci. Bldg.)
Stefaan Vaes (K. U. Leuven)
Rigidity for II$_1$ factors: fundamental groups, bimodules, subfactors
Stefaan Vaes (K. U. Leuven)
Rigidity for II$_1$ factors: fundamental groups, bimodules, subfactors
Operator Algebra Seminars
16:30-18:00 Room #128 (Graduate School of Math. Sci. Bldg.)
Stefaan Vaes (K. U. Leuven)
Rigidity for II$_1$ factors: fundamental groups, bimodules, subfactors
Stefaan Vaes (K. U. Leuven)
Rigidity for II$_1$ factors: fundamental groups, bimodules, subfactors
Seminar on Mathematics for various disciplines
16:30-17:30 Room #056 (Graduate School of Math. Sci. Bldg.)
伊東一文 (North Carolina State University)
Calibration problems for Black-Scholes American Options under the GMMY process
伊東一文 (North Carolina State University)
Calibration problems for Black-Scholes American Options under the GMMY process
[ Abstract ]
The calibration problem is formulated as a control problem for the parabolic variational inequality. The well-posedness of the formulation is discussed and the necessary optimality is derived. A numerical approximation method is also presented.
The calibration problem is formulated as a control problem for the parabolic variational inequality. The well-posedness of the formulation is discussed and the necessary optimality is derived. A numerical approximation method is also presented.
GCOE lecture series
17:00-18:00 Room #123 (Graduate School of Math. Sci. Bldg.)
Eric Opdam (University of Amsterdam)
The spectral category of Hecke algebras and applications
第1講: Reductive p-adic groups and Hecke algebras
https://www.ms.u-tokyo.ac.jp/~toshi/seminar/ut-seminar2009.html#20090108opdam
Eric Opdam (University of Amsterdam)
The spectral category of Hecke algebras and applications
第1講: Reductive p-adic groups and Hecke algebras
[ Abstract ]
Hecke algebras play an important role in the harmonic analysis of a p-adic reductive group. On the other hand, their representation theory and harmonic analysis can be described almost completely explicitly. This makes affine Hecke algebras an ideal tool to study the harmonic analysis of p-adic groups. We will illustrate this in this series of lectures by explaining how various components of the Bernstein center contribute to the level-0 L-packets of tempered representations, purely from the point of view of harmonic analysis.
We define a "spectral category" of (affine) Hecke algebras. The morphisms in this category are not algebra morphisms but are affine morphisms between the associated tori of unramified characters, which are compatible with respect to the so-called Harish-Chandra μ-functions. We show that such a morphism generates a Plancherel measure preserving correspondence between the tempered spectra of the two Hecke algebras involved. We will discuss typical examples of spectral morphisms.
We apply the spectral correspondences of affine Hecke algebras to level-0 representations of a quasi-split simple p-adic group. We will concentrate on the example of the special orthogonal groups $SO_{2n+1}(K)$. We show that all affine Hecke algebras which arise in this context admit a *unique* spectral morphism to the Iwahori-Matsumoto Hecke algebra, a remarkable phenomenon that is crucial for this method. We will recover in this way Lusztig's classification of "unipotent" representations.
[ Reference URL ]Hecke algebras play an important role in the harmonic analysis of a p-adic reductive group. On the other hand, their representation theory and harmonic analysis can be described almost completely explicitly. This makes affine Hecke algebras an ideal tool to study the harmonic analysis of p-adic groups. We will illustrate this in this series of lectures by explaining how various components of the Bernstein center contribute to the level-0 L-packets of tempered representations, purely from the point of view of harmonic analysis.
We define a "spectral category" of (affine) Hecke algebras. The morphisms in this category are not algebra morphisms but are affine morphisms between the associated tori of unramified characters, which are compatible with respect to the so-called Harish-Chandra μ-functions. We show that such a morphism generates a Plancherel measure preserving correspondence between the tempered spectra of the two Hecke algebras involved. We will discuss typical examples of spectral morphisms.
We apply the spectral correspondences of affine Hecke algebras to level-0 representations of a quasi-split simple p-adic group. We will concentrate on the example of the special orthogonal groups $SO_{2n+1}(K)$. We show that all affine Hecke algebras which arise in this context admit a *unique* spectral morphism to the Iwahori-Matsumoto Hecke algebra, a remarkable phenomenon that is crucial for this method. We will recover in this way Lusztig's classification of "unipotent" representations.
https://www.ms.u-tokyo.ac.jp/~toshi/seminar/ut-seminar2009.html#20090108opdam
2009/01/06
Lectures
16:00-17:30 Room #123 (Graduate School of Math. Sci. Bldg.)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第3回)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第3回)
[ Abstract ]
第3回: 心臓の電気生理
・ 心臓の生理学
・ 3次元ケーブルモデル
・ 均質化極限とbidomain モデル
・ 心臓における興奮波の伝播
第3回: 心臓の電気生理
・ 心臓の生理学
・ 3次元ケーブルモデル
・ 均質化極限とbidomain モデル
・ 心臓における興奮波の伝播
Lectures
14:00-15:30 Room #123 (Graduate School of Math. Sci. Bldg.)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第2回)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第2回)
[ Abstract ]
第2回: 神経細胞の電気生理
・ Hodgkin-Huxley モデルとFitzHugh-Nagumo モデル
・ 神経軸策とケーブルモデル
・ 活動電位の伝播
・ 有髄神経と跳躍伝導
第2回: 神経細胞の電気生理
・ Hodgkin-Huxley モデルとFitzHugh-Nagumo モデル
・ 神経軸策とケーブルモデル
・ 活動電位の伝播
・ 有髄神経と跳躍伝導
2009/01/05
Lectures
16:00-17:30 Room #123 (Graduate School of Math. Sci. Bldg.)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第1回)
森洋一朗 (ミネソタ大学)
GCOE連続講演会 「電気生理学における数理モデル」 (3回講演の第1回)
[ Abstract ]
第1回: 電気生理学の基礎概念入門 (5日 16:00-17:30)
・ 膜電位とイオンチャネル
・ 細胞の体積調節
・ チャネルの開閉
・ Hodgkin-Huxley モデルと興奮性
第2回: 神経細胞の電気生理 (6日 14:00-15:30)
・ Hodgkin-Huxley モデルとFitzHugh-Nagumo モデル
・ 神経軸策とケーブルモデル
・ 活動電位の伝播
・ 有髄神経と跳躍伝導
第3回: 心臓の電気生理 (6日 16:00-17:30)
・ 心臓の生理学
・ 3次元ケーブルモデル
・ 均質化極限とbidomain モデル
・ 心臓における興奮波の伝播
数理生理学は生理現象を数理モデルを用いて解明しようとする営みであって,実験生物学の定量化,計算機の高速化にともなって急速に発展してきている分野です.この講義では数理生理学の中でも古典的な分野である電気生理学の数理について解説します.
生物学の予備知識は仮定しません.ごく初等的な微分方程式の知識で十分理解できる内容ですが,一部で応用数学の標準的手法(接合漸近展開、均質化極限など)を用います.第1回目の内容が講義全体の基礎となりますが,第2回目と第3回目の講義を独立に聴講することも可能です.またテーマにあわせて最近の話題についても触れる予定です。
講演者のプロフィール:
森洋一朗氏は,東京大学医学部を卒業後,渡米してニューヨーク大学(クーラント研究所)で数学の学位を得ました.すでに数々の賞を受賞しており,数理生物学における若手のホープとして国際的に高く評価されています.
第1回: 電気生理学の基礎概念入門 (5日 16:00-17:30)
・ 膜電位とイオンチャネル
・ 細胞の体積調節
・ チャネルの開閉
・ Hodgkin-Huxley モデルと興奮性
第2回: 神経細胞の電気生理 (6日 14:00-15:30)
・ Hodgkin-Huxley モデルとFitzHugh-Nagumo モデル
・ 神経軸策とケーブルモデル
・ 活動電位の伝播
・ 有髄神経と跳躍伝導
第3回: 心臓の電気生理 (6日 16:00-17:30)
・ 心臓の生理学
・ 3次元ケーブルモデル
・ 均質化極限とbidomain モデル
・ 心臓における興奮波の伝播
数理生理学は生理現象を数理モデルを用いて解明しようとする営みであって,実験生物学の定量化,計算機の高速化にともなって急速に発展してきている分野です.この講義では数理生理学の中でも古典的な分野である電気生理学の数理について解説します.
生物学の予備知識は仮定しません.ごく初等的な微分方程式の知識で十分理解できる内容ですが,一部で応用数学の標準的手法(接合漸近展開、均質化極限など)を用います.第1回目の内容が講義全体の基礎となりますが,第2回目と第3回目の講義を独立に聴講することも可能です.またテーマにあわせて最近の話題についても触れる予定です。
講演者のプロフィール:
森洋一朗氏は,東京大学医学部を卒業後,渡米してニューヨーク大学(クーラント研究所)で数学の学位を得ました.すでに数々の賞を受賞しており,数理生物学における若手のホープとして国際的に高く評価されています.
2008/12/26
Monthly Seminar on Arithmetic of Automorphic Forms
13:30-16:00 Room #123 (Graduate School of Math. Sci. Bldg.)
軍司圭一 (Postech) 13:30-14:30
On Siegel Eisenstein series of degree two and weight 2
未定
軍司圭一 (Postech) 13:30-14:30
On Siegel Eisenstein series of degree two and weight 2
[ Abstract ]
Cups singularities の組み合わせ論的な解析を援用して、あるレベルのモジュラー群に対する表題の空間の次元を決定する。
未定 (未定) 15:00-16:00Cups singularities の組み合わせ論的な解析を援用して、あるレベルのモジュラー群に対する表題の空間の次元を決定する。
未定
2008/12/19
Lecture Series on Mathematical Sciences in Soceity
16:20-17:50 Room #128 (Graduate School of Math. Sci. Bldg.)
高野 康 (みずほ第一フィナンシャルテクノロジー)
金融リスク管理と数理Ⅱ(応用編)
高野 康 (みずほ第一フィナンシャルテクノロジー)
金融リスク管理と数理Ⅱ(応用編)
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