Graduate School of Economics
ISOBE Takeshi

Papers

1. Non-compactness results for the spinorial Yamabe-type problems with non-smooth geometric data (Peer-reviewed)
Takeshi Isobe, Yannick Sire, Tian Xu
Journal of Functional Analysis Vol.287,pp.110472 2024.8
doi
2. Morse homology for perturbed Dirac-harmonic maps into flat tori (Peer-reviewed)
Takeshi Isobe
Journal of Topology and Analysis 2024.2
doi Link
3. Solutions of spinorial Yamabe-type problems on 𝑆^{𝑚}: Perturbations and applications (Peer-reviewed)
Takeshi Isobe, Tian Xu
Transactions of the American Mathematical Society Vol.376,No.9,pp.6397-6446 2023.6
doi Link
4. Morse–Floer theory for superquadratic Dirac-geodesics (Peer-reviewed)
Takeshi Isobe, Ali Maalaoui
Calculus of Variations and Partial Differential Equations Vol.61,No.6 2022.12
doi Link Link
5. Asymptotically linear Dirac-harmonic maps into flat tori (Peer-reviewed)
磯部 健志
Differential Geometry and its Applications Vol.75 2021.4
doi
6. Morse homology for asymptotically linear Dirac equations on compact manifolds (Peer-reviewed)
磯部 健志
Journal of Differential Equations Vol.269,No.6,pp.5062-5109 2020.9
doi
7. On the multiple existence of superquadratic Dirac-harmonic maps into flat tori (Peer-reviewed)
磯部 健志
Calculus of Variations and Partial Differential Equations Vol.58,No.4,pp.126- 2019.8
doi Link
8. Morse-Floer theory for superquadratic Dirac equations, I: relative Morse indices and compactness (Peer-reviewed)
磯部 健志
Journal of Fixed point theory and applications Vol.19,No.2,pp.1315-1363 2017.6
doi
9. Morse-Floer theory for superquadratic Dirac equations, II: construction and computation of Morse-Floer homology (Peer-reviewed)
磯部 健志
Journal of Fixed point theory and applications Vol.19,No.2,pp.1365-1425 2017.6
doi
10. Spinorial Yamabe Type Equations on S-3 via Conley Index (Peer-reviewed)
Takeshi Isobe
ADVANCED NONLINEAR STUDIES Vol.15,No.1,pp.39-60 2015.2
doi
11. On superquadratic Dirac equations on compact spin manifolds
磯部 健志
数理解析研究所講究録(Geometry of solutions of partial differential equations 研究集会報告集) Vol.1896,No.1896,pp.79-97 2014.5
Link
12. Sobolev bundles with abelian structure groups (Peer-reviewed)
Takeshi Isobe
CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS Vol.49,No.1-2,pp.77-102 2014.1
doi
13. A perturbation method for spinorial Yamabe type equations on Sm and its application (Peer-reviewed)
Takeshi Isobe
Mathematische Annalen Vol.355,No.4,pp.1255-1299 2013
doi
14. Small coupling limit and multiple solutions to the Dirichlet problem for Yang-Mills connections in four dimensions. I (Peer-reviewed)
Takeshi Isobe, Antonella Marini
JOURNAL OF MATHEMATICAL PHYSICS Vol.53,No.6,pp.063707- 2012.6
doi
15. Small coupling limit and multiple solutions to the Dirichlet problem for Yang-Mills connections in four dimensions. I (Peer-reviewed)
Takeshi Isobe, Antonella Marini
JOURNAL OF MATHEMATICAL PHYSICS Vol.53,No.6,pp.063706- 2012.6
doi
16. On the existence of nonlinear Dirac-geodesics on compact manifolds (Peer-reviewed)
Takeshi Isobe
CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS Vol.43,No.1-2,pp.83-121 2012.1
doi
17. Existence results for solutions to nonlinear Dirac equations on compact spin manifolds (Peer-reviewed)
Takeshi Isobe
MANUSCRIPTA MATHEMATICA Vol.135,No.3-4,pp.329-360 2011.7
doi
18. Nonlinear Dirac equations with critical nonlinearities on compact spin manifolds (Peer-reviewed)
Takeshi Isobe
JOURNAL OF FUNCTIONAL ANALYSIS Vol.260,No.1,pp.253-307 2011.1
doi
19. Regularity and energy quantization for the Yang-Mills-Dirac equations on 4-manifolds (Peer-reviewed)
Takeshi Isobe
DIFFERENTIAL GEOMETRY AND ITS APPLICATIONS Vol.28,No.4,pp.359-375 2010.8
doi
20. Topological and analytical properties of Sobolev bundles. II. Higher dimensional cases (Peer-reviewed)
Takeshi Isobe
REVISTA MATEMATICA IBEROAMERICANA Vol.26,No.3,pp.729-798 2010
Link
21. Topological and analytical properties of Sobolev bundles, I: The critical case (Peer-reviewed)
Takeshi Isobe
ANNALS OF GLOBAL ANALYSIS AND GEOMETRY Vol.35,No.3,pp.277-337 2009.5
doi
22. A regularity result for a class of degenerate Yang-Mills connections in critical dimensions (Peer-reviewed)
Takeshi Isobe
FORUM MATHEMATICUM Vol.20,No.6,pp.1109-1139 2008.11
doi
23. On a minimizing property of the Hopf soliton in the Faddeev-Skyrme model (Peer-reviewed)
Takeshi Isobe
REVIEWS IN MATHEMATICAL PHYSICS Vol.20,No.7,pp.765-786 2008.8
doi
24. Topology of Sobolev bundles
磯部 健志
数理解析研究所講究録(変分問題とその周辺 研究集会報告集) Vol.1528,No.1528,pp.104-116 2007.1
Link
25. On global singularities of Sobolev mappings (Peer-reviewed)
T Isobe
MATHEMATISCHE ZEITSCHRIFT Vol.252,No.4,pp.691-730 2006.4
doi
26. Obstruction theory for the approximation and the deformation problems for Sobolev mappings (Peer-reviewed)
T Isobe
ANNALS OF GLOBAL ANALYSIS AND GEOMETRY Vol.27,No.4,pp.299-332 2005.6
doi
27. Multiple solutions for the Dirichlet problem for H-systems with small H (Peer-reviewed)
T Isobe
COMMUNICATIONS IN CONTEMPORARY MATHEMATICS Vol.6,No.4,pp.579-600 2004.8
doi
28. Multiple solutions for the Dirichlet problem for <I>H</I>-systems (Peer-reviewed)
磯部 健志
数理解析研究所講究録(変分問題とその周辺 研究集会報告集) No.1347,pp.55-72 2003.11
Link
29. Obstructions to the extension problem of Sobolev mappings (Peer-reviewed)
磯部 健志
Topological Methods in Nonlinear Analysis Vol.21,No.2,pp.345-368 2003.6
doi
30. On the asymptotic analysis of <I>H</I>-systems. II. The construction of large solutions (Peer-reviewed)
磯部 健志
Advances in Differential Equations Vol.6,No.6,pp.641-700 2001.11
Link
31. On the asymptotic analysis of <I>H</I>-systems. I. Asymptotic behavior of large solutions (Peer-reviewed)
磯部 健志
Advances in Differential Equations Vol.6,No.5,pp.513-546 2001.11
Link
32. On the asymptotic behavior of the solutions of the Landau-Lifshitz equation (Peer-reviewed)
磯部 健志
Advances in Differential Equations Vol.5,No.7-9,pp.1033-1090 2000.11
Link
33. On the construction of solutions of the Landau-Lifshitz equation (Peer-reviewed)
磯部 健志
Differential and Integral Equations Vol.13,No.1-3,pp.159-188 2000.3
Link
34. Classification of blow-up points and multiplicity of solutions for H-systems (Peer-reviewed)
T Isobe
COMMUNICATIONS IN PARTIAL DIFFERENTIAL EQUATIONS Vol.25,No.7-8,pp.1259-1325 2000
doi
35. Sobolev写像の近似問題と幾つかの性質について
磯部 健志
数理解析研究所講究録(変分問題とその周辺 研究集会報告集) Vol.1076,No.1076,pp.16-26 1999.2
Link
36. Regularity of harmonic maps into a static Lorentzian manifold (Peer-reviewed)
磯部 健志
Journal of Geometric Analysis Vol.8,No.3,pp.447-463 1998.9
doi
37. Energy estimate, energy gap phenomenon, and relaxed energy for Yang-Mills functional (Peer-reviewed)
磯部 健志
Journal of Geometric Analysis Vol.8,No.1,pp.43-64 1998.1
doi
38. Non-existence and uniqueness results for boundary value problems for Yang-Mills connections (Peer-reviewed)
T Isobe
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Vol.125,No.6,pp.1737-1744 1997.6
doi
39. On topologically distinct solutions of the Dirichlet problem for Yang-Mills connections (Peer-reviewed)
T Isobe, A Marini
CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS Vol.5,No.4,pp.345-358 1997.5
doi
40. Optimal regularity of harmonic maps from a Riemannian manifold into a static Lorentzian manifold
T Isobe
PACIFIC JOURNAL OF MATHEMATICS Vol.178,No.1,pp.71-93 1997.3
doi
41. Some new properties of Sobolev mappings: Intersection theoretical approach (Peer-reviewed)
T Isobe
PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS Vol.127,No.2,pp.337-358 1997
doi
42. A free boundary value problem of nematic liquid crystals with variable degree of orientation (Peer-reviewed)
T Isobe
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS Vol.26,No.2,pp.149-169 1996.1
doi
43. Relaxed Yang-Mills functional over 4-manifolds (Peer-reviewed)
磯部 健志
Topological Methods in Nonlinear Analysis Vol.6,No.2,pp.235-253 1995.12
doi
44. Energy Gap Phenomenon and the Existence of Infinitely Many Weakly Harmonic Maps for the Dirichlet Problem (Peer-reviewed)
Takeshi Isobe
Journal of Functional Analysis Vol.129,No.2,pp.243-267 1995.5
doi
45. CONVERGENCE RESULT FOR THE WEAK SOLUTIONS OF NONLINEAR ELLIPTIC-SYSTEMS (Peer-reviewed)
T ISOBE
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS Vol.24,No.8,pp.1247-1259 1995.4
doi
46. Characterization of the strong closure of C∞(B4; S2) in W1, p (B4; S2) (16 5 ≤ p &lt; 4) (Peer-reviewed)
Takeshi Isobe
Journal of Mathematical Analysis and Applications Vol.190,No.2,pp.361-372 1995.3
doi Link

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Presentations

No. Name of subject/Conference Name Year Site
1. Perturbed Dirac-harmonic maps into flat tori: existence and multiplicity(Elliptic and parabolic equations)
Holding date :
Presentation date : 2019.11.22
龍谷大学
2. Morse-Floer homology for nonlinear Dirac equations(微分方程式の総合的研究)
Holding date :
Presentation date : 2017.12.16
東京工業大学理学院
3. 非線形ディラック方程式に対するモース・フレアーホモロジー(第22回幾何と解析セミナー)
Holding date :
Presentation date : 2017.6.23
東北大学情報科学研究科 純粋・応用数学研究センター
4. 非線形ディラック方程式に対するモース理論(数理科学セミナー)
Holding date :
Presentation date : 2017.5.24
一橋大学
5. On superquadratic Dirac equations on compact spin manifolds(Geometry of solutions of partial differential equations)
Holding date :
Presentation date : 2013.11.20
京都大学数理解析研究所

Research Projects

No. Research subject Research item(Awarding organization, System name) Year
1. Development of Geometric analysis and Morse theory for Dirac type equations
Scientific Research (C)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research )
2020.4 - 2025.3
2. Geometry of partial differential equations and inverse problems

( Awarding organization: 東北大学情報科学研究科 System name: Joint Research(Domestic joint research) )
2018.4 - 2022.3
3. 非線形ディラック方程式に対するモース・フレアー理論
基盤研究(C)
( Awarding organization: 日本学術振興会 System name: 科学研究費助成事業 )
2015.4 - 2020.3
4. infinite dimensional Morse theory
2010.4 -
5. スピン多様体上の非線形ディラック方程式の変分解析
基盤研究(C)
( Awarding organization: 日本学術振興会 System name: 科学研究費助成事業 )
2010.4 - 2015.3
6. A study of higher dimensional geometric variational problems
Grant-in-Aid for Scientific Research (C)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research )
2006 - 2009
7. H-systemと、関連する変分問題の解の多重性について
若手研究(B)
( Awarding organization: 日本学術振興会 System name: 科学研究費助成事業 )
2003 - 2005
8. 変分問題の大域的研究
奨励研究(A)
( Awarding organization: 日本学術振興会 System name: 科学研究費助成事業 )
1999 - 2000
9. System of partial differential equations and non-commutative analysis
Grant-in-Aid for Scientific Research (C)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research )
1998 - 2000
10. 古典力学系および群作用のエルゴード理論的研究
基盤研究(C)
( Awarding organization: 日本学術振興会 System name: 科学研究費助成事業 )
1996
11. geometric variational problems
1994.8 -

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