A generalization of the corona theorem in the unit disc
Mathematische Zeitschrift, 1990 The purpose of this note is to prove a variant of the corona theorem in the unit disc without using the notation of Carleson measure or any particular duality or factorization theorem for analytic functions. The corona theorem was first proved by Carleson [1]. For more background and further references, see Gamelin 1-2] and Garnett I-3, 4].
openaire +1 more source
Stability analysis of fractional order model on corona transmission dynamics. [PDF]
Chaos Solitons Fractals, 2021 Hincal E, Alsaadi SH.
europepmc +1 more source
Nonlinear distance measures under the framework of Pythagorean fuzzy sets with applications in problems of pattern recognition, medical diagnosis, and COVID-19 medicine selection. [PDF]
Beni Suef Univ J Basic Appl Sci, 2023 Dutta P, Borah G, Gohain B, Chutia R.
europepmc +1 more source
Fractional optimal control of COVID-19 pandemic model with generalized Mittag-Leffler function. [PDF]
Adv Differ Equ, 2021 Khan A +5 more
europepmc +1 more source
Stability analysis and optimal control of a fractional-order generalized SEIR model for the COVID-19 pandemic. [PDF]
Appl Math Comput, 2023 Xu C, Yu Y, Ren G, Sun Y, Si X.
europepmc +1 more source
A Toeplitz corona theorem for the pentablock and applications
We state and prove a Toeplitz corona theorem for the pentablock $\mathbb{P}$, a domain in $\mathbb{C}^3$ given by \[ \mathbb{P}=\{(a_{21}, \text{tr}(A), \det(A)) \in \mathbb C^3 : A=[a_{ij}] \in M_2(\mathbb C), \|A\|<1\}. \] By two different applications of this theorem, we obtain a few new characterizations in the Toeplitz corona theorems for the ...
Pal, Sourav, Tomar, Nitin
openaire +2 more sources
Solving Pythagorean fuzzy partial fractional diffusion model using the Laplace and Fourier transforms. [PDF]
Granul Comput, 2023 Akram M, Ihsan T.
europepmc +1 more source
Nonlinear analysis of a four-dimensional fractional hyper-chaotic system based on general Riemann-Liouville-Caputo fractal-fractional derivative. [PDF]
Nonlinear Dyn, 2021 Pan Y.
europepmc +1 more source
The reflexive edge strength on some almost regular graphs. [PDF]
Heliyon, 2021 Agustin IH +4 more
europepmc +1 more source