115 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kitasato UniversityJP3 papers
- Chiba UniversityJP2 papers
- Osaka Kyoiku UniversityJP2 papers
- The University of TokyoJP2 papers
- Tohoku UniversityJP2 papers
- High Energy Accelerator Research OrganizationJP1 paper
- Kisarazu HospitalJP1 paper
- Nagoya UniversityJP1 paper
- National Institute of InformaticsJP1 paper
- National Institute of TechnologyJP1 paper
- Ritsumeikan UniversityJP1 paper
- Shohoku CollegeJP1 paper
22 papers
Dress code for infrared safe scattering in QED
Hayato Hirai, Sotaro Sugishita
We study the -matrix and inclusive cross-section for general dressed states in quantum electrodynamics. We obtain an infrared factorization formula of the -matrix elements fo…
IR finite S-matrix by gauge invariant dressed states
Hayato Hirai, Sotaro Sugishita
Dressed states were proposed to define the infrared (IR) finite -matrix in QED or gravity. We show that the original Kulish-Faddeev dressed states are not enough to cure the IR…
Functions preserving operator means
Trung Hoa Dinh, Hiroyuki Osaka, Shuhei Wada
Let be a non-trivial operator mean in the sense of Kubo and Ando, and let the set of normalized positive operator monotone functions on . In this paper, w…
Ando-Hiai type inequalities for operator means and operator perspectives
Fumio Hiai, Yuki Seo, Shuhei Wada
We improve the existing Ando-Hiai inequalities for operator means and present new ones for operator perspectives in several ways. We also provide the operator perspective version o…
Geometric convexity of an operator mean
Shuhei Wada
Let be an operator mean in the sense of Kubo and Ando. If the representation function of satisfies then the operator mean i…
Rosser provability and normal modal logics
Taishi Kurahashi
In this paper, we investigate Rosser provability predicates whose provability logics are normal modal logics. First, we prove that there exists a Rosser provability predicate whose…
Uniform Lyndon interpolation property in propositional modal logics
Taishi Kurahashi
We introduce and investigate the notion of uniform Lyndon interpolation property (ULIP) which is a strengthening of both uniform interpolation property and Lyndon interpolation pro…
Ando-Hiai type inequalities for multivariate operator means
Fumio Hiai, Yuki Seo, Shuhei Wada
We present several Ando-Hiai type inequalities for -variable operator means for positive invertible operators. Ando-Hiai's inequalities given here are not only of the original t…
Pointed harmonic volume and its relation to the extended Johnson homomorphism
Yuuki Tadokoro
The period for a compact Riemann surface, defined by the integral of differential 1-forms, is a classical complex analytic invariant, strongly related to the complex structure of t…
Harmonic volume and its applications
Yuuki Tadokoro
The period is a classical complex analytic invariant for a compact Riemann surface defined by integration of differential 1-forms. It has a strong relationship with the complex str…
Nonlinear sigma model in discrete complex analysis
Masaru Kamata, Masayoshi Sekiguchi, Yuuki Tadokoro
We present a discrete version of the two-dimensional nonlinear sigma model examined by Belavin and Polyakov. We formulate it by means of Mercat's discrete complex analysis a…
Equivalence relations among some inequalities on operator means
Shuhei Wada, Takeaki Yamazaki
We will consider about some inequalities on operator means for more than three operators, for instance, ALM and BMP geometric means will be considered. Moreover, log-Euclidean and…
Operator monotonicity of some functions
Masaru Nagisa, Shuhei Wada
We investigate the operator monotonicity of functions which was considered by V.E. Szabo.
Outer-Product Hidden Markov Model and Polyphonic MIDI Score Following
Eita Nakamura, Tomohiko Nakamura, Yasuyuki Saito +2
We present a polyphonic MIDI score-following algorithm capable of following performances with arbitrary repeats and skips, based on a probabilistic model of musical performances. I…
The period matrix of the hyperelliptic curve
Yuuki Tadokoro
A geometric algorithm is introduced for finding a symplectic basis of the first integral homology group of a compact Riemann surface, which is a -cyclic covering of ${\mathbb C}…
Computational wave optics library for C++: CWO++ library
Tomoyoshi Shimobaba, Jian Tong Weng, Takahiro Sakurai +6
Diffraction calculations, such as the angular spectrum method, and Fresnel diffractions, are used for calculating scalar light propagation. The calculations are used in wide-rangin…
Nontrivial algebraic cycles in the Jacobian varieties of some quotients of Fermat curves
Yuuki Tadokoro
We obtain the trace map image of the values of certain harmonic volumes for some quotients of Fermat curves. This provides the algorithm that the algebraic cycles called by the k-t…
The pointed harmonic volumes of hyperelliptic curves with Weierstrass base points
Yuuki Tadokoro
We give a explicit computation of the pointed harmonic volumes of hyperelliptic curves with Weierstrass base points, which are paraphrased into a combinatorial formula.
A nontrivial algebraic cycle in the Jacobian variety of the Klein quartic
Yuuki Tadokoro
We prove some value of the harmonic volume for the Klein quartic is nonzero modulo ${1/2}\{mathbb Z}$, using special values of the generalized hypergeometric function …
Riemann-Liouville integrals of fractional order and extended KP hierarchy
Masaru Kamata, Atsushi Nakamula
An attempt is given to formulate the extensions of the KP hierarchy by introducing fractional order pseudo-differential operators. In the case of the extension with the half-order…
A q-analog of the ADHMN construction and axisymmetric multi-instantons
Masaru Kamata, Atsushi Nakamula
In the preceding paper (Phys. Lett. B463 (1999) 257), the authors presented a q-analog of the ADHMN construction and obtained a family of anti-selfdual configurations with a parame…
One-parameter family of selfdual solutions in classical Yang-Mills theory
Masaru Kamata, Atsushi Nakamula
The ADHM construction, which yields (anti-)selfdual configurations in classical Yang-Mills theories, is applied to an infinite dimensional l^2 vector space, and as a consequence, a…