Department of Mathematics

Research output

Research output per year 1977 2021

• 366 Article
• 33 Conference contribution
• 7 Conference article
• 3 Comment/debate
• 7 More
  • 2 Chapter
  • 2 Paper
  • 2 Editorial
  • 1 Review article

Research output per year

Research output per year

Search results

• 2021

  Behavior of the Lattice Gaussian Free Field with Weak Repulsive Potentials

  Sakagawa, H., 2021 Jan, In: Journal of Statistical Physics. 182, 1, 8.

  Research output: Contribution to journal › Article › peer-review

  • Gaussian Fields 100%
  • square wells 94%
  • Path 51%
  • Zero 38%
  • Form 31%

• Classification of Genus-1 Holomorphic Lefschetz Pencils

  Hamada, N. & Hayano, K., 2021, In: Turkish Journal of Mathematics. 45, 3, p. 1079-1119 41 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Genus 100%
  • Blow-up 73%
  • Fiber 71%
  • Classify 65%
  • Isomorphism Classes 45%

• Default functions and Liouville type theorems based on symmetric diffusions

  Atsuji, A., 2021 Apr, In: Journal of the Mathematical Society of Japan. 73, 2, p. 525-551 27 p.

  Research output: Contribution to journal › Article › peer-review

  • Liouville Type Theorem 100%
  • Local Martingale 53%
  • Subharmonic Function 50%
  • Dirichlet Process 49%
  • Holomorphic Maps 46%

• Directed discrete midpoint convexity

  Tamura, A. & Tsurumi, K., 2021 Feb, In: Japan Journal of Industrial and Applied Mathematics. 38, 1

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Midpoint 100%
  • Convex function 18%
  • Proximity 16%
  • Function Minimization 7%
  • Parallelogram 6%
  1 Citation (Scopus)

• Foliation by area-constrained willmore spheres near a nondegenerate critical point of the scalar curvature

  Ikoma, N., Malchiodi, A. & Mondino, A., 2021, In: International Mathematics Research Notices. 2020, 19, p. 6539-6568 30 p.

  Research output: Contribution to journal › Article › peer-review

  • Scalar Curvature 100%
  • Foliation 92%
  • Critical point 81%
  • Riemannian Manifold 38%
  • Three-dimensional 33%

• Hyperbolic free boundary problems and applications to wave-structure interactions

  Iguchi, T. & Lannes, D., 2021, In: Indiana University Mathematics Journal. 70, 1, p. 353-364 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Free Boundary Problem 100%
  • Transmission Problem 85%
  • Initial-boundary-value Problem 83%
  • Interaction 68%
  • Quasilinear Problems 59%
  2 Citations (Scopus)

• Improved Streaming Algorithms for Maximizing Monotone Submodular Functions under a Knapsack Constraint

  Huang, C. C. & Kakimura, N., 2021 Mar, In: Algorithmica. 83, 3, p. 879-902 24 p.

  Research output: Contribution to journal › Article › peer-review

  • Streaming 100%
  • Submodular Function 97%
  • Knapsack 91%
  • Monotone Function 83%
  • Cardinality Constraints 34%

• Mixed multifractal spectra of Birkhoff averages for non-uniformly expanding one-dimensional Markov maps with countably many branches

  Jaerisch, J. & Takahasi, H., 2021 Jul 16, In: Advances in Mathematics. 385, 107778.

  Research output: Contribution to journal › Article › peer-review

  • Multifractal Spectrum 100%
  • Branch 62%
  • Fuchsian Group 45%
  • Continued Fraction Expansion 42%
  • Cusp 38%

• On weak solutions to a fractional hardy-henon equation: Part i: nonexistence

  Hasegawa, S., Ikoma, N. & Kawakami, T., 2021 Apr 1, In: Communications on Pure and Applied Analysis. 20, 4, p. 1559-1600 42 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Nonexistence 100%
  • Weak Solution 95%
  • Fractional 83%

• Pulmonary vein isolation alone vs. more extensive ablation with defragmentation and linear ablation of persistent atrial fibrillation: The EARNEST-PVI trial

  Inoue, K., Hikoso, S., Masuda, M., Furukawa, Y., Hirata, A., Egami, Y., Watanabe, T., Minamiguchi, H., Miyoshi, M., Tanaka, N., Oka, T., Okada, M., Kanda, T., Matsuda, Y., Kawasaki, M., Hayashi, K., Kitamura, T., Dohi, T., Sunaga, A., Mizuno, H. & 2 others, Nakatani, D. & Sakata, Y., 2021 Apr 1, In: Europace. 23, 4, p. 565-574 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Pulmonary Veins 100%
  • Atrial Fibrillation 77%
  • Cardiac Electrophysiologic Techniques 32%
  • Catheter Ablation 13%
  • Atrial Flutter 7%
  1 Citation (Scopus)

• Semi-classical states for logarithmic Schrödinger equations

  Ikoma, N., Tanaka, K., Wang, Z. Q. & Zhang, C., 2021 Apr, In: Nonlinearity. 34, 4, p. 1900-1942 43 p.

  Research output: Contribution to journal › Article › peer-review

  • Logarithmic equation 100%
  • Logarithmic 54%
  • Singularity 30%
  • Bound States 26%
  • concentrating 25%

• Stability and Existence of Stationary Solutions to the Euler–Poisson Equations in a Domain with a Curved Boundary

  Suzuki, M. & Takayama, M., 2021 Jan, In: Archive for Rational Mechanics and Analysis. 239, 1, p. 357-387 31 p.

  Research output: Contribution to journal › Article › peer-review

  • Euler-Poisson Equations 100%
  • Curved Boundary 96%
  • Positive ions 87%
  • Stationary Solutions 70%
  • Plasma sheaths 61%

• Submodular reassignment problem for reallocating agents to tasks with synergy effects

  Kakimura, N., Kamiyama, N., Kobayashi, Y. & Okamoto, Y., 2021, (Accepted/In press) In: Discrete Optimization. 100631.

  Research output: Contribution to journal › Article › peer-review

  • Synergy 100%
  • Submodular Function 37%
  • Function Minimization 26%
  • Scenarios 17%
  • Set theory 17%
• 2020

  A nationwide randomized, double-blind, placebo-controlled physicians’ trial of loxoprofen for the treatment of fatigue, headache, and nausea after hangovers

  Hara, M., Hayashi, K., Kitamura, T., Honda, M. & Tamaki, M., 2020 May, In: Alcohol. 84, p. 21-25 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Loxoprofen Sodium 100%
  • Loxoprofen 92%
  • loxoprofen 86%
  • fatigue 55%
  • Nausea 44%
  2 Citations (Scopus)

• Association between prehospital transfer distance and surgical mortality in emergency thoracic aortic surgery

  Izumisawa, Y., Endo, H., Ichihara, N., Takahashi, A., Nawata, K., Shiraishi, H., Miyata, H. & Motomura, N., 2020, (Accepted/In press) In: Journal of Thoracic and Cardiovascular Surgery.

  Research output: Contribution to journal › Article › peer-review

  • Thoracic Surgery 100%
  • Emergencies 85%
  • Mortality 55%
  • Acute Chest Syndrome 28%
  • High-Volume Hospitals 27%
  2 Citations (Scopus)

• Category of mixed plectic hodge structures

  Bannai, K., Hagihara, K., Kobayashi, S., Yamada, K., Yamamoto, S. & Yasuda, A. S., 2020, In: Asian Journal of Mathematics. 24, 1, p. 31-76 46 p.

  Research output: Contribution to journal › Article › peer-review

  • Mixed Hodge Structure 100%
  • Group Extension 43%
  • Filtration 33%
  • Partial 23%

• Cluster analysis methods applied to daily vessel location data to identify cooperative fishing among tuna purse-seiners

  Lennert-Cody, C. E., Maunder, M. N., Román, M. H., Xu, H., Minami, M. & Lopez, J., 2020 Dec, In: Environmental and Ecological Statistics. 27, 4, p. 649-664 16 p.

  Research output: Contribution to journal › Article › peer-review

  • Tuna 100%
  • Cluster Analysis 93%
  • Vessel 82%
  • Fisheries 71%
  • cluster analysis 63%
  1 Citation (Scopus)

• Color degree sum conditions for properly colored spanning trees in edge-colored graphs

  Kano, M., Maezawa, S. I., Ota, K., Tsugaki, M. & Yashima, T., 2020 Nov, In: Discrete Mathematics. 343, 11, 112042.

  Research output: Contribution to journal › Article › peer-review

  • Degree Sum 100%
  • Edge-colored Graph 96%
  • Spanning tree 77%
  • Color 62%
  • Adjacent 25%
  1 Citation (Scopus)

• Complexity of the multi-service center problem

  Ito, T., Kakimura, N. & Kobayashi, Y., 2020 Nov 24, In: Theoretical Computer Science. 842, p. 18-27 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Center Problem 100%
  • NP-hard 77%
  • NP-complete problem 37%
  • Polynomials 30%
  • Costs 23%
  1 Citation (Scopus)

• Discrete midpoint convexity

  Moriguchi, S., Murota, K., Tamura, A. & Tardella, F., 2020 Feb, In: Mathematics of Operations Research. 45, 1, p. 99-128 30 p.

  Research output: Contribution to journal › Article › peer-review

  • Midpoint 100%
  • Convexity 95%
  • Convex function 48%
  • Proximity 44%
  • Structural Properties 35%
  3 Citations (Scopus)

• ENTROPY-APPROACHABILITY for TRANSITIVE MARKOV SHIFTS over INFINITE ALPHABET

  Takahasi, H., 2020 Sep, In: Proceedings of the American Mathematical Society. 148, 9, p. 3847-3857 11 p.

  Research output: Contribution to journal › Article › peer-review

  • Weak Topology 100%
  • Borel Measure 93%
  • Compact Set 81%
  • Probability Measure 75%
  • Entropy 72%
  2 Citations (Scopus)

• Infinite-dimensional stochastic differential equations and tail σ -fields

  Osada, H. & Tanemura, H., 2020 Aug 1, In: Probability Theory and Related Fields. 177, 3-4, p. 1137-1242 106 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Stochastic Differential Equations 100%
  • Brownian Motion 72%
  • Tail 66%
  • Brownian motion 52%
  • Particles 27%
  1 Citation (Scopus)

• Integrality of subgradients and biconjugates of integrally convex functions

  Murota, K. & Tamura, A., 2020 Feb 1, In: Optimization Letters. 14, 1, p. 195-208 14 p.

  Research output: Contribution to journal › Article › peer-review

  • Subgradient 100%
  • Integrality 96%
  • Convex function 71%
  • Integer 14%
  • Convex Analysis 11%
  2 Citations (Scopus)

• Large deviations for denominators of continued fractions

  Takahasi, H., 2020 Nov, In: Nonlinearity. 33, 11, p. 5861-5874 14 p.

  Research output: Contribution to journal › Article › peer-review

  • Denominator 100%
  • Continued fraction 97%
  • Large Deviations 95%
  • Thermodynamics 82%
  • deviation 68%

• Lyapunov optimization for non-generic one-dimensional expanding Markov maps

  Shinoda, M. & Takahasi, H., 2020 Sep 1, In: Ergodic Theory and Dynamical Systems. 40, 9, p. 2571-2592 22 p.

  Research output: Contribution to journal › Article › peer-review

  • Lyapunov 100%
  • Optimization 80%
  • Shift Map 50%
  • Subset 39%
  • Equilibrium State 38%
  1 Citation (Scopus)

• Market pricing for matroid rank valuations

  Bérczi, K., Kakimura, N. & Kobayashi, Y., 2020 Dec, 31st International Symposium on Algorithms and Computation, ISAAC 2020. Cao, Y., Cheng, S-W. & Li, M. (eds.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, p. 391-3915 3525 p. 39. (Leibniz International Proceedings in Informatics, LIPIcs; vol. 181).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Costs 100%
  • Polynomials 40%

• Multiplicity of radial and nonradial solutions to equations with fractional operators

  Ikoma, N., 2020 Jul, In: Communications on Pure and Applied Analysis. 19, 7, p. 3501-3530 30 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Radial Solutions 100%
  • Multiplicity 65%
  • Fractional 59%
  • Infinitely Many Solutions 48%
  • Operator 38%
  1 Citation (Scopus)

• Novel Dense Subgraph Discovery Primitives: Risk Aversion and Exclusion Queries

  Tsourakakis, C. E., Chen, T., Kakimura, N. & Pachocki, J., 2020, Machine Learning and Knowledge Discovery in Databases - European Conference, ECML PKDD 2019, Proceedings. Brefeld, U., Fromont, E., Hotho, A., Knobbe, A., Maathuis, M. & Robardet, C. (eds.). Springer, p. 378-394 17 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11906 LNAI).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Risk Aversion 100%
  • Query 66%
  • Subgraph 55%
  • Polynomials 51%
  • Approximation algorithms 36%
  1 Citation (Scopus)

• On convergence of Chorin’s projection method to a Leray–Hopf weak solution

  Kuroki, H. & Soga, K., 2020 Oct 1, In: Numerische Mathematik. 146, 2, p. 401-433 33 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Incompressible Navier-Stokes 100%
  • Slip Boundary Condition 93%
  • Projection Method 76%
  • Weak Solution 61%
  • Navier-Stokes Equations 60%

• On diagrams of simplified trisections and mapping class groups

  Hayano, K., 2020 Jan, In: Osaka Journal of Mathematics. 57, 1, p. 17-37 21 p.

  Research output: Contribution to journal › Article › peer-review

  • Mapping Class Group 100%
  • Diagram 73%
  • Lefschetz Fibration 62%
  • Simple Closed Curve 53%
  • Cusp 45%

• On Siegel paramodular forms corresponding to skew-holomorphic Jacobi cusp forms

  Miyazaki, T., 2020 Jul 1, In: International Journal of Mathematics. 31, 8, 2050064.

  Research output: Contribution to journal › Article › peer-review

  • Jacobi Forms 100%
  • Cusp Form 84%
  • Skew 66%
  • Integrability 65%
  • Odd 52%

• Solitary wave solutions to the Isobe-Kakinuma model for water waves

  Colin, M. & Iguchi, T., 2020 Jul 1, In: Studies in Applied Mathematics. 145, 1, p. 52-80 29 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Solitons 100%
  • Water waves 89%
  • Water Waves 81%
  • Solitary Wave Solution 78%
  • Euler-Lagrange Equations 26%

• Spectral aspects of symmetric matrix signings

  Carlson, C., Chandrasekaran, K., Chang, H. C., Kakimura, N. & Kolla, A., 2020 Aug, In: Discrete Optimization. 37, 100582.

  Research output: Contribution to journal › Article › peer-review

  • Symmetric matrix 100%
  • Spectrality 78%
  • Social sciences 65%
  • Invertible 63%
  • Graph theory 58%

• Stable standing waves of nonlinear Schrödinger equations with potentials and general nonlinearities

  Ikoma, N. & Miyamoto, Y., 2020 Apr 1, In: Calculus of Variations and Partial Differential Equations. 59, 2, 48.

  Research output: Contribution to journal › Article › peer-review

  • Standing Wave 100%
  • Nonlinear equations 88%
  • Minimizer 78%
  • Minimization Problem 76%
  • Nonexistence 70%
  2 Citations (Scopus)

• STOCHASTIC AND VARIATIONAL APPROACH TO FINITE DIFFERENCE APPROXIMATION OF HAMILTON-JACOBI EQUATIONS

  SOGA, KOHEI., 2020 May, In: Mathematics of Computation. 89, 323, p. 1135-1159 25 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Finite Difference Approximation 100%
  • Variational Approach 95%
  • Hamilton-Jacobi Equation 93%
  • Random walk 75%
  • Viscosity 70%
  1 Citation (Scopus)

• The b-branching problem in digraphs

  Kakimura, N., Kamiyama, N. & Takazawa, K., 2020 Sep 15, In: Discrete Applied Mathematics. 283, p. 565-576 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Branching 100%
  • Digraph 96%
  • Matroid 28%
  • Polynomials 26%
  • Decomposition 25%
  1 Citation (Scopus)

• The extension problem for graph C*-algebras

  Eilers, S., Gabe, J., Katsura, T., Ruiz, E. & Tomforde, M., 2020, In: Annals of K-Theory. 5, 2, p. 295-315 21 p.

  Research output: Contribution to journal › Article › peer-review

  • Graph C*-algebra 100%

• The geometric quantizations and the measured Gromov-Hausdorff convergences

  Hattori, K., 2020, In: Journal of Symplectic Geometry. 18, 6, p. 1575-1628 54 p.

  Research output: Contribution to journal › Article › peer-review

  • Gromov-Hausdorff Convergence 100%
  • Geometric Quantization 82%
  • Fiber 51%
  • Complex Structure 43%
  • Fibration 41%

• The Hodge realization of the polylogarithm on the product of multiplicative groups

  Bannai, K., Hagihara, K., Yamada, K. & Yamamoto, S., 2020 Dec 1, In: Mathematische Zeitschrift. 296, 3-4, p. 1787-1817 31 p.

  Research output: Contribution to journal › Article › peer-review

  • Polylogarithms 100%
  • Multiplicative 61%
  • Cohomology Group 41%
  • Cohomology 31%
  • Logarithmic 31%

• Theory and algorithms for shapelet-based multiple-instance learning

  Suehiro, D., Hatano, K., Takimoto, E., Yamamoto, S., Bannai, K. & Takeda, A., 2020 Aug 1, In: Neural Computation. 32, 8, p. 1580-1613 34 p.

  Research output: Contribution to journal › Article › peer-review

  • Heuristics 100%
  • Bag 90%
  • Learning 57%
  • Classifier 46%
  • Linear Programming 43%
  1 Citation (Scopus)

• Topology of pareto sets of strongly convex problems

  Hamada, N., Hayano, K., Ichiki, S., Kabata, Y. & Teramoto, H., 2020, In: SIAM Journal on Optimization. 30, 3, p. 2659-2686 28 p.

  Research output: Contribution to journal › Article › peer-review

  • Pareto Set 100%
  • Pareto Front 68%
  • Topology 49%
  • Set theory 44%
  • Multiobjective optimization 32%
  1 Citation (Scopus)

• Uniqueness of Dirichlet Forms Related to Infinite Systems of Interacting Brownian Motions

  Kawamoto, Y., Osada, H. & Tanemura, H., 2020, (Accepted/In press) In: Potential Analysis.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Dirichlet Form 100%
  • Infinite Systems 92%
  • Brownian motion 72%
  • Uniqueness 60%
  • Theorem 33%

• Uniqueness of Minimizer for Countable Markov Shifts and Equidistribution of Periodic Points

  Takahasi, H., 2020 Dec, In: Journal of Statistical Physics. 181, 6, p. 2415-2431 17 p.

  Research output: Contribution to journal › Article › peer-review

  • Equidistribution 100%
  • uniqueness 96%
  • Periodic Points 89%
  • Equilibrium State 89%
  • Minimizer 79%
• 2019

  5 / 6-Superdiffusion of Energy for Coupled Charged Harmonic Oscillators in a Magnetic Field

  Saito, K., Sasada, M. & Suda, H., 2019 Nov 1, In: Communications in Mathematical Physics. 372, 1, p. 151-182 32 p.

  Research output: Contribution to journal › Article › peer-review

  • Phonon 100%
  • Superdiffusion 97%
  • Coupled Oscillators 86%
  • Harmonic Oscillator 77%
  • Boltzmann Equation 74%
  1 Citation (Scopus)

• Bézier simplex fitting: Describing pareto fronts of simplicial problems with small samples in multi-objective optimization

  Kobayashi, K., Hamada, N., Sannai, A., Tanaka, A., Bannai, K. & Sugiyama, M., 2019, 33rd AAAI Conference on Artificial Intelligence, AAAI 2019, 31st Innovative Applications of Artificial Intelligence Conference, IAAI 2019 and the 9th AAAI Symposium on Educational Advances in Artificial Intelligence, EAAI 2019. AAAI press, p. 2304-2313 10 p. (33rd AAAI Conference on Artificial Intelligence, AAAI 2019, 31st Innovative Applications of Artificial Intelligence Conference, IAAI 2019 and the 9th AAAI Symposium on Educational Advances in Artificial Intelligence, EAAI 2019).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Multiobjective optimization 100%
  • Surface fitting 50%
  • Set theory 45%
  • Experiments 12%
  3 Citations (Scopus)

• Correction to: Stickelberger ideals and Fitting ideals of class groups for abelian number fields (Mathematische Annalen, (2011), 350, 3, (549-575), 10.1007/s00208-010-0570-y)

  Kurihara, M. & Miura, T., 2019 Aug 6, In: Mathematische Annalen. 374, 3-4, p. 2083-2088 6 p.

  Research output: Contribution to journal › Comment/debate › peer-review

  Open Access

  • Class Group 100%
  • Number field 80%
  • CM-field 40%
  • Class number 32%
  • Lemma 22%

• Effect of Extensive Ablation on Recurrence in Patients with Persistent Atrial Fibrillation Treated with Pulmonary Vein Isolation (EARNEST-PVI) trial: Design and rationale

  Dohi, T., Nakatani, D., Inoue, K., Hikoso, S., Oka, T., Hayashi, K., Masuda, M., Furukawa, Y., Kawasaki, M., Egami, Y., Kashiwase, K., Hirata, A., Watanabe, T., Miyoshi, M., Takeda, T., Nakagawa, A., Mizuno, H., Minamiguchi, H., Kitamura, T., Suna, S. & 5 others, Kojima, T., Kida, H., Bolrathanak, O., Okuyama, Y. & Sakata, Y., 2019 Aug, In: Journal of Cardiology. 74, 2, p. 164-168 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Pulmonary Veins 100%
  • Atrial Fibrillation 77%
  • Catheter Ablation 59%
  • Recurrence 49%
  • Cardiac Electrophysiologic Techniques 24%
  2 Citations (Scopus)

• Estimation of risk contributions with MCMC

  Koike, T. & Minami, M., 2019, In: Quantitative Finance. 19, 9, p. 1579-1597 19 p.

  Research output: Contribution to journal › Article › peer-review

  • Markov Chain Monte Carlo 100%
  • Estimator 66%
  • Rare Events 44%
  • Risk Model 36%
  • Metropolis-Hastings Algorithm 28%
  6 Citations (Scopus)

• Exact and approximation algorithms for weighted matroid intersection

  Huang, C. C., Kakimura, N. & Kamiyama, N., 2019 Sep 1, In: Mathematical Programming. 177, 1-2, p. 85-112 28 p.

  Research output: Contribution to journal › Article › peer-review

  • Matroid Intersection 100%
  • Exact Algorithms 77%
  • Approximation algorithms 74%
  • Approximation Algorithms 60%
  • Decomposition Techniques 16%
  2 Citations (Scopus)

• Existence and non-existence of maximizers for the Moser–Trudinger type inequalities under inhomogeneous constraints

  Ikoma, N., Ishiwata, M. & Wadade, H., 2019 Feb 8, In: Mathematische Annalen. 373, 1-2, p. 831-851 21 p.

  Research output: Contribution to journal › Article › peer-review

  • Nonexistence 100%
  • Surface area 69%
  • Unit ball 53%
  • Denote 35%
  • Form 23%
  5 Citations (Scopus)