4 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Tohoku UniversityJP5 papers
- Ehime UniversityJP1 paper
- Gunma UniversityJP1 paper
- HUN-REN Alfréd Rényi Institute of MathematicsHU1 paper
- Institut de recherche mathématique de RennesFR1 paper
- Kobe City College of TechnologyJP1 paper
- Kyoto UniversityJP1 paper
- Kyushu UniversityJP1 paper
- Osaka Gakuin UniversityJP1 paper
- RIKEN Center for Advanced Intelligence ProjectJP1 paper
- The University of OsakaJP1 paper
- Toneyama National HospitalJP1 paper
15 papers
Directional Cluster Migration Driven by Escape-Rate Asymmetry in Multi-Compartment Granular Systems
Kai Kono, Hiroyuki Ebata, Shio Inagaki
Granular materials are inherently out-of-equilibrium systems due to energy dissipation through inelastic collisions and friction. When driven by mechanical agitation such as vibrat…
Human-in-the-loop Adaptation in Group Activity Feature Learning for Team Sports Video Retrieval
Chihiro Nakatani, Hiroaki Kawashima, Norimichi Ukita
This paper proposes human-in-the-loop adaptation for Group Activity Feature Learning (GAFL) without group activity annotations. This human-in-the-loop adaptation is employed in a g…
Multivariate Uncertainty Quantification with Tomographic Quantile Forests
Takuya Kanazawa
Quantifying predictive uncertainty is essential for safe and trustworthy real-world AI deployment. Yet, fully nonparametric estimation of conditional distributions remains challeng…
Boundedness of composition operator in Orlicz-Morrey spaces
Masahiro Ikeda, Isao Ishikawa, Ryota Kawasumi
In this paper, we investigate necessary and sufficient conditions on the boundedness of composition operators on the Orlicz-Morrey spaces. The results of boundedness include Lebesg…
Canonical coordinates for moduli spaces of rank two irregular connections on curves
Arata Komyo, Frank Loray, Masa-Hiko Saito +1
In this paper, we study a geometric counterpart of the cyclic vector which allow us to put a rank 2 meromorphic connection on a curve into a ``companion'' normal form. This allow u…
Bordered complex Hadamard matrices and strongly regular graphs
Takuya Ikuta, Akihiro Munemasa
We consider bordered complex Hadamard matrices whose core is contained in the Bose-Mesner algebra of a strongly regular graph. Examples include a complex Hadamard matrix whose core…
Analysis of the QCD Kondo phase using random matrices
Takuya Kanazawa
We propose a novel random matrix model that describes the QCD Kondo phase. The model correctly implements both the chiral symmetry of light quarks and the SU(2) spin symmetry of he…
Relativistic Cooper pairing in the microscopic limit of chiral random matrix theory
Takuya Kanazawa
Random matrix theory (RMT) provides a powerful framework for analyzing universal features of strongly coupled physical systems. In quantum chromodynamics (QCD), cold quark matter a…
Complex Hadamard matrices attached to a 3-class nonsymmetric association scheme
Takuya Ikuta, Akihiro Munemasa
In this paper we classify complex Hadamard matrices contained in the Bose-Mesner algebra of nonsymmetric 3-class association schemes. As a consequence of our classification, we hav…
The support designs of the triply even codes of length 48
Tsuyoshi Miezaki, Hiroyuki Nakasora
In this paper, we present examples of codes all of whose weight classes support 1-designs, with duals whose classes include two that support 2-designs. We can find these examples i…
Butson-type complex Hadamard matrices and association schemes on Galois rings of characteristic 4
Takuya Ikuta, Akihiro Munemasa
We consider nonsymmetric hermitian complex Hadamard matrices belonging to the Bose-Mesner algebra of commutative nonsymmetric association schemes. First, we give a characterization…
Uncountable locally free groups and their group rings
Tsunekazu Nishinaka
In this note, we show that an uncountable locally free group, and therefore every locally free group, has a free subgroup whose cardinality is the same as that of . This result…
Complex Hadamard matrices contained in a Bose-Mesner algebra
Takuya Ikuta, Akihiro Munemasa
A complex Hadamard matrix is a square matrix H with complex entries of absolute value 1 satisfying , where stands for the Hermitian transpose and I is the identity ma…
Nomura algebras of nonsymmetric Hadamard models
Takuya Ikuta, Akihiro Munemasa
We show that the Nomura algebra of the nonsymmetric Hadamard model coincides with the Bose-Mesner algebra of the directed Hadamard graph.
Spin models constructed from Hadamard matrices
Takuya Ikuta, Akihiro Munemasa
A spin model (for link invariants) is a square matrix which satisfies certain axioms. For a spin model , it is known that is a permutation matrix, and its order…