Results 101 to 110 of about 1,491,687 (323)

Hypercyclic Toeplitz operators

open access: yes, 2016
We study hypercyclicity of the Toeplitz operators in the Hardy space $H^2(\mathbb{D})$ with symbols of the form $p(\bar{z}) +\phi(z)$, where $p$ is a polynomial and $\phi \in H^\infty(\mathbb{D})$.
Baranov, Anton, Lishanskii, Andrei
core   +1 more source

On coefficients of some p-valent starlike functions

open access: yesFilomat, 2019
We consider the class Ap of functions f analytic in the unit disk |z| < 1 in the complex plane, of the form f(z) = zp + ... such that Rezf(p)(z)/f (p-1)(z) > 0 in the unit disc. The object of the present paper is to derive some bounds for coefficients in this class and relation with the functions satisfying condition Ref(k)(z)/f(p-k ...
Mamoru Nunokawa   +2 more
openaire   +3 more sources

On‐Surface Synthesis of Bismuth Monolayers through Ice‐Confined Redox Reactions

open access: yesAdvanced Materials, EarlyView.
We report an ice‐confined growth strategy for the synthesis of atomically thin 2D bismuth and related 2D metals. This approach involves rapid freezing of a BiCl3 aqueous solution on an aluminum foil using liquid nitrogen, which triggers interfacial redox reactions between the ice and the aluminum surface.
Zexiang He   +8 more
wiley   +1 more source

Some results of p-valent analytic functions defined by integral operator

open access: yesLe Matematiche, 2015
In this paper we study different applications of the inclusion relationships, radius problems and some other interesting properties of p-valent functions which are defined by integral operator.
R. M. EL-Ashwah, M. E. Drbuk
doaj  

q-Derivative on p-valent meromorphic functions associated with connected sets [PDF]

open access: yesSurveys in Mathematics and its Applications, 2019
In this article, two subfamilies of p-valent meromorphic functions by means of q-derivative are defined. With that, we study coefficient inequality, distortion bounds and convex family of these subclasses. Also connected sets structure is investigated.
Sh. Najafzadeh
doaj  

Counting Planar Eulerian Orientations

open access: yes, 2018
Inspired by the paper of Bonichon, Bousquet-M\'elou, Dorbec and Pennarun, we give a system of functional equations which characterise the ordinary generating function, $U(x),$ for the number of planar Eulerian orientations counted by edges.
Guttmann, Anthony J, Price, Andrew Elvey
core   +1 more source

Some general properties of analytic and p-valent functions

open access: yesFilomat
Let Ap be the class of functions f (z) of the form f (z) = zp + ap+1zp+1 + ap+2zp+2 + ..., (p ? N = {1, 2, 3,...}) which are analytic in the open unit disc U.
S. Sümer Eker, H. Güney, S. Owa
semanticscholar   +1 more source

Bio‐Inspired Hierarchical Nanoreactor With Hetero‐Coordinated Fe–P–Co Bridges for Whole‐Pathway‐Regulated Electrocatalytic Oxygen Reduction

open access: yesAdvanced Materials, EarlyView.
A bioinspired Co‐doped Fe2P on N‐doped carbon with a hierarchical eucalyptus‐like nanoarchitecture is engineered to regulate oxygen across the entire electrochemical pathway, achieving a half‐wave potential of 0.938 V vs. RHE, sustaining 373 h of discharge in Al‐air batteries, and delivering an energy density of 3487 Wh/kg.
Qiaoling Xu   +7 more
wiley   +1 more source

Fekete-Szegö Inequalities of a Subclass of Multivalent Analytic Functions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2016
The main object of this paper is to study Fekete-Szegö problem for a certain subclass of p - valent analytic functions. Fekete-Szegö inequality of several classes are obtained as special cases from our results.
Selvaraj C.   +2 more
doaj   +1 more source

Spin‐Selective Anti‐Perovskite Enables Breakthrough Nitrate‐to‐Ammonia Electrocatalysis

open access: yesAdvanced Materials, EarlyView.
CuNCo3 antiperovskite leverages built‐in 3d–3d interactions to stabilize and generate spin‐selective Co sites during nitrate reduction. Multiple operando techniques reveal that Cu acts as a promoter, inducing partial surface Co‐N cleavage and Cu‐Co charge redistribution.
Chun‐Kuo Peng   +11 more
wiley   +1 more source

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