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ISHIZEKI Aya
| Mathematics, Electronics and Informatics Division | Assistant Professor |
| Mathematics |
Researcher information
■ Degree■ Research Keyword
- Möbius energy, knot energies, geometric analysis, nonlinear analysis, partial differential equations, variational formulas, second variation, gradient flows
- Natural sciences, Basic analysis, Geometric analysis / nonlinear analysis / partial differential equations
Performance information
■ Paper- A Möbius invariant discretization of O’Hara’s Möbius energy
Simon Blatt; Aya Ishizeki; Takeyuki Nagasawa
Journal of Knot Theory and Its Ramifications, Volume:31, Number:03, Mar. 2022, [Reviewed]
We introduce a new discretization of O’Hara’s Möbius energy. In contrast to the known discretizations of Simon and Kim and Kusner it is invariant under Möbius transformations of the surrounding space. The starting point for this new discretization is the cosine formula of Doyle and Schramm. We then show [Formula: see text]-convergence of our discretized energies to the Möbius energy.
World Scientific Pub Co Pte Ltd, Scientific journal
DOI:https://doi.org/10.1142/s021821652250016x
DOI ID:10.1142/s021821652250016x, ISSN:0218-2165, eISSN:1793-6527 - Decomposition of generalized O’Hara’s energies
Aya Ishizeki; Takeyuki Nagasawa
Mathematische Zeitschrift, Oct. 2020, [Reviewed]
Springer Science and Business Media LLC, Scientific journal
DOI:https://doi.org/10.1007/s00209-020-02601-w
DOI ID:10.1007/s00209-020-02601-w, ISSN:0025-5874, eISSN:1432-1823 - Upper and Lower Bounds and Modulus of Continuity of Decomposed Möbius Energies
Aya Ishizeki; Takeyuki Nagasawa
The Journal of Geometric Analysis, Volume:31, Number:6, First page:5659, Last page:5686, Aug. 2020, [Reviewed]
Springer Science and Business Media LLC, Scientific journal
DOI:https://doi.org/10.1007/s12220-020-00496-x
DOI ID:10.1007/s12220-020-00496-x, ISSN:1050-6926, eISSN:1559-002X - The $$ L^2 $$ L 2 -gradient of decomposed Möbius energies
Aya Ishizeki; Takeyuki Nagasawa
Calculus of Variations and Partial Differential Equations, Volume:55, Number:3, May 2016, [Reviewed]
Springer Science and Business Media LLC, Scientific journal
DOI:https://doi.org/10.1007/s00526-016-0993-8
DOI ID:10.1007/s00526-016-0993-8, ISSN:0944-2669, eISSN:1432-0835 - The invariance of decomposed Möbius energies under inversions with center on curves
Aya Ishizeki; Takeyuki Nagasawa
Journal of Knot Theory and Its Ramifications, Volume:25, Number:02, First page:1650009, Last page:1650009, Feb. 2016, [Reviewed]
It is well known that one of O’Hara’s knot energies is called the Möbius energy because of its invariance under Möbius transformations. We showed in a previous paper that the Möbius energy can be decomposed into three parts that retain invariance but we left open the question of invariance regarding inversions with respect to spheres centered on a knot. Here, we answer this question under the assumption that the knots have extra regularity. The result holds not only for knots but also for closed curves in [Formula: see text].
World Scientific Pub Co Pte Lt, Scientific journal
DOI:https://doi.org/10.1142/s0218216516500097
DOI ID:10.1142/s0218216516500097, ISSN:0218-2165, eISSN:1793-6527 - A decomposition theorem of the Möbius energy II: variational formulae and estimates
Aya Ishizeki
Math. Ann. 363 (1-2), 617-635, 2015, [Reviewed]
Scientific journal
ORCID:210563537 - A decomposition theorem of the Möbius energy I: Decomposition and Möbius invariance
Aya Ishizeki; Takeyuki Nagasawa
Kodai Mathematical Journal, Volume:37, Number:3, Oct. 2014, [Reviewed]
Tokyo Institute of Technology, Department of Mathematics, Scientific journal
DOI:https://doi.org/10.2996/kmj/1414674619
DOI ID:10.2996/kmj/1414674619, ISSN:0386-5991
