72 citations · 74 across the 6 of their papers we have counts for
6 papers
On Sylvester equations in Banach subalgebras
Qiquan Fang, Chang Eon Shin, Qiyu Sun
Let be a Banach algebra and be a Banach subalgebra that admits norm-controlled inversion in . In this work, we take in the Banach…
Differential subalgebras and norm-controlled inversion
Chang Eon Shin, Qiyu Sun
In this paper, we consider the norm-controlled inversion for differential -subalgebras of a symmetric -algebra with common identity and involution.
Polynomial control on weighted stability bounds and inversion norms of localized matrices on simple graphs
Qiquan Fang, Chang Eon Shin, Qiyu Sun
The (un)weighted stability for some matrices is one of essential hypotheses in time-frequency analysis and applied harmonic analysis. In the first part of this paper, we show that…
Spectra of Bochner-Riesz means on
Yang Chen, Qiquan Fang, Qiyu Sun
The Bochner-Riesz means are shown to have either the unit interval or the whole complex plane as their spectra on
Stability of Localized Integral Operators on Weighted spaces
Kyung Soo Rim, Chang Eon Shin, Qiyu Sun
In this paper, we consider localized integral operators whose kernels have mild singularity near the diagonal and certain Holder regularity and decay off the diagonal. Our model ex…
Stability of Localized Operators
Chang Eon Shin, Qiyu Sun
Let , be the space of all -summable sequences and be the convolution operator associated with a summable sequence . It is known that the $\ell…