3 citations · 5 across the 4 of their papers we have counts for
4 papers
A thresholding algorithm to Willmore-type flows via fourth order linear parabolic equation
Katsuyuki Ishii, Yoshihito Kohsaka, Nobuhito Miyake +1
We propose a thresholding algorithm to Willmore-type flows in . This algorithm is constructed based on the asymptotic expansion of the solution to the initial value p…
Constrained WZWN Models on G/{S x U(1)^n} and Exchange Algebra of G-Primaries
Shogo Aoyama, Katsuyuki Ishii
Consistently constrained WZWN models on G/{S x U(1)^n} is given by constraining currents of the WZWN models with G. Poisson brackets are set up on the light-like plane. Using them…
Consistently Constrained SL(N) WZWN Models and Classical Exchange Algebra
Shogo Aoyama, Katsuyuki Ishii
Currents of the SL(N) WZWN model are constrained so that the remaining symmetry is a symmetry of constrained currents as well. Such consistency enables us to study the Poisson stru…
Convergence of the Approximation scheme to American option pricing via the discrete Morse semiflow
Katsuyuki Ishii, Seiro Omata
We consider the approximation scheme of the American call option via the discrete Morse semiflow. It is the minimizing scheme of a time-semidiscretized variational functional. In t…