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20172026
most citedNonexistence of radial optimal functions for the Sobolev inequality on Cartan-Hadamard manifolds

1 citations · 2 across the 8 of their papers we have counts for

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math.AP2026

Fundamental solution and diffusion limits for the heat equation in a half-space with a diffusive dynamical boundary condition

Kazuhiro Ishige, Sho Katayama, Tatsuki Kawakami

We derive an explicit representation of the fundamental solution to the heat equation in a half-space of with a diffusive dynamical boundary condition, and establis…

math.AP2026

Existence and uniqueness of -solutions to time-fractional nonlinear diffusion equations

Mikiya Kametaka, Tatsuki Kawakami

We establish the global existence and uniqueness of -solutions to the Cauchy problem for time-fractional porous medium type nonlinear diffusion equations. Furthermore, we give…

math.AP2024

Fundamental solution to the heat equation with a dynamical boundary condition

Kazuhiro Ishige, Sho Katayama, Tatsuki Kawakami

We give an explicit representation of the fundamental solution to the heat equation on a half-space of with the homogeneous dynamical boundary condition, and obtain…

math.AP2024

Existence of solutions for a semilinear parabolic system with singular initial data

Yohei Fujishima, Kazuhiro Ishige, Tatsuki Kawakami

Let be a solution to the Cauchy problem for a semilinear parabolic system \[ \mathrm{(P)} \qquad \cases{ \partial_t u=D_1Δu+v^p\quad & $\quad\mbox{in}\quad{\mathbb{R}}^N\ti…

math.AP2024

Existence of solutions to the fractional semilinear heat equation with a singular inhomogeneous term

Kazuhiro Ishige, Tatsuki Kawakami, Ryo Takada

We study the existence of solutions to the fractional semilinear heat equation with a singular inhomogeneous term. For this aim, we establish decay estimates of the fractional heat…

math.AP2024

Existence of solutions to a fractional semilinear heat equation in uniformly local weak Zygmund type spaces

Norisuke Ioku, Kazuhiro Ishige, Tatsuki Kawakami

In this paper we introduce uniformly local weak Zygmund type spaces, and obtain an optimal sufficient condition for the existence of solutions to the critical fractional semilinear…