Zobrazeno 1 - 10
of 4 601
pro vyhledávání: '"Yagasaki A"'
Publikováno v:
Clinical Ophthalmology, Vol Volume 18, Pp 2327-2335 (2024)
Teiji Yagasaki,1,2 Yoshimi Yokoyama,2 Ayaka Yagasaki,1,2 Kenta Hozumi,2 Sho Ichikawa2,3 1Yagasaki Eye Clinic, Ichinomiya, Aichi, Japan; 2Department of Ophthalmology, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Aichi, Japan; 3Chu
Externí odkaz:
https://doaj.org/article/e278528410a44ccf8e68be0fc49c7e82
Publikováno v:
Clinical Ophthalmology, Vol Volume 17, Pp 807-816 (2023)
Teiji Yagasaki,1,2 Yoshimi Yokoyama,2 Ayaka Yagasaki,2,3 Riho Eboshita,1 Keiko Tagami,1 Yayoi Haga,1 Arisu Touya1 1Yagasaki Eye Clinic, Ichinomiya, Aichi, Japan; 2Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, N
Externí odkaz:
https://doaj.org/article/e59fa46c2a624b09b691e183c9320a17
Publikováno v:
Clinical Ophthalmology, Vol Volume 16, Pp 2047-2056 (2022)
Teiji Yagasaki,1,2 Yoshimi Yokoyama,2 Ayaka Yagasaki,2,3 Makiko Tsukui2 1Yagasaki Eye Clinic, Ichinomiya, Aichi, Japan; 2Department of Ophthalmology, Japan Community Health Care Organization Chukyo Hospital, Nagoya, Aichi, Japan; 3Department of Ophth
Externí odkaz:
https://doaj.org/article/35e7680b8cbe409994babeb52946f3aa
Autor:
Ihara, Ryosuke, Yagasaki, Kazuyuki
The continuum limit provides a useful tool for analyzing coupled oscillator networks. Recently, Medvedev (Comm. Math. Sci., 17 (2019), no. 4, pp. 883-898) gave a mathematical foundation for such an approach when the networks are defined on single gra
Externí odkaz:
http://arxiv.org/abs/2305.16728
Autor:
Yagasaki, Kazuyuki
We give sufficient conditions for three- or four-dimensional truncated Poincare-Dulac normal forms of resonance degree two to be meromorphically nonintegrable when the Jacobian matrices have a zero and pair of purely imaginary eigenvalues or two inco
Externí odkaz:
http://arxiv.org/abs/2303.12493
Autor:
Yagasaki, Kazuyuki
We study bifurcation behavior in periodic perturbations of two-dimensional symmetric systems exhibiting codimension-two bifurcations with a double eigenvalue when the frequencies of the perturbation terms are small. We transform the periodically pert
Externí odkaz:
http://arxiv.org/abs/2302.06861
Autor:
Fukui, Kazuhiko, Yagasaki, Tatsuhiko
In this paper we study boundedness of bundle diffeomorphism groups over a circle. For a fiber bundle $\pi : M \to S^1$ with fiber $N$ and structure group $\Gamma$ and $r \in {\Bbb Z}_{\geq 0} \cup \{ \infty \}$ we distinguish an integer $k = k(\pi, r
Externí odkaz:
http://arxiv.org/abs/2209.07848
Autor:
Yagasaki, Kazuyuki
We prove that general three- or four-dimensional systems %of differential equations are real-analytically nonintegrable near degenerate equilibria in the Bogoyavlenskij sense under additional weak conditions when the Jacobian matrices have a zero and
Externí odkaz:
http://arxiv.org/abs/2205.13262
Autor:
Yagasaki, Kazuyuki
We consider time-periodic perturbations of single-degree-of-freedom Hamiltonian systems and study their real-meromorphic nonintegrability in the Bogoyavlenskij sense using a generalized version due to Ayoul and Zung of the Morales-Ramis theory. The p
Externí odkaz:
http://arxiv.org/abs/2205.04803
Autor:
Yagasaki, Kazuyuki
We prove the nonintegrability of the susceptible-exposed-infected-removed (SEIR) epidemic model in the Bogoyavlenskij sense. This property of the SEIR model is different from the more fundamental susceptible-infected-removed (SIR) model, which is Bog
Externí odkaz:
http://arxiv.org/abs/2203.10513