Results 51 to 60 of about 5,146,047 (210)

lacunary directional maximal function on the Heisenberg group [PDF]

Mathematical Research Letters, 2004
Let \(K=(k_1,k_2,k_3)\in{\mathbb Z}^3\) and \(v_K=(2^{k_1}, 2^{k_2}, 2^{k_3}).\) Let \(\mathbb H^1\) be the Heisenberg group identified with \({\mathbb R}^2\times {\mathbb R}^1\) endowed with the group multiplication: \[ (p,q,t)\cdot(p',q',t')=(p+p',q+q', t+t'+2(p'\cdot q-p\cdot q')).
openaire   +2 more sources

Changes in land‐snail communities and steppe environments in the lower Rhône valley during the Lateglacial–Holocene transition

Boreas, EarlyView.
Land snail successions in the lower Rhône valley allow us to reconstruct the postglacial recolonization. From the Lateglacial period onwards, Mediterranean steppe communities appeared. The arrival of forest taxa was significantly delayed by aridity. The question of glacial refugia, both local and distant, primarily concerned Mediterranean species of ...
Frédéric Magnin
wiley   +1 more source

Riesz lacunary uniform integrability and statistical convergence via power series method

Journal of Inequalities and Applications
In this paper, the concepts of Riesz lacunary statistical convergence, Riesz lacunary strong convergence, and Riesz lacunary uniform integrability of real sequences within the framework of power series are introduced and studied.
Jun-Jie Quan, Devia Narrania, Kuldip Raj, Qing-Bo Cai   +3 more
doaj   +1 more source

Weighted modulus Sθ-convergence of order α in probability

Arab Journal of Mathematical Sciences, 2017
Let θ={kr}r∈N∪{0} be a lacunary sequence, ϕ be a modulus function and {tn}n∈N be a sequence of real numbers such that tn>δ,∀n∈N (where δ is a fixed positive real number) and Tn=t1+t2+⋯+tn (where n∈N and T0=0).
Sanjoy Ghosal, Mandobi Banerjee, Avishek Ghosh   +2 more
doaj   +1 more source

Lacunary Generating Functions for the Laguerre Polynomials

, 2013
Symbolic methods of umbral nature play an important and increasing role in the theory of special functions and in related fields like combinatorics. We discuss an application of these methods to the theory of lacunary generating functions for the Laguerre polynomials for which we give a number of new closed form expressions.
Babusci, Danilo, Dattoli, Giuseppe, Górska, Katarzyna, Penson, Karol   +3 more
openaire   +3 more sources

Lacunary I-invariant convergence [PDF]

, 2020
In this study, firstly, we introduce the notion of lacunary invariant uniform density of any subset E of the set N (the set of all natural numbers). Then, as associated with this notion, we give the definition of lacunary I_σ-convergence for
Uğur ULUSU, Fatih NURAY, Nuray, Fatih, Ulusu, Uğur   +3 more
core   +2 more sources

Oxidative Catalytic Depolymerization of Technical Lignins to Vanillin(Derivatives) Using Polyoxometalate Catalysts

Advanced Chemical Engineering, Volume 1, Issue 2, December 2026.
A nickel‐substituted polyoxometalate catalyst enables efficient lignin degradation into monoaromatic compounds in a methanol–water solution. ABSTRACT The transition from fossil‐based resources to renewable feedstocks is a cornerstone of industrial decarbonization.
Dorothea Voß, Max P. Papajewski, Jan‐Christian Raabe, Andreas H. Pawlig, Jakob Albert   +4 more
wiley   +1 more source

Some New Lacunary Strong Convergent Vector-Valued Sequence Spaces

Abstract and Applied Analysis, 2014
We introduce some vector-valued sequence spaces defined by a Musielak-Orlicz function and the concepts of lacunary convergence and strong (A)-convergence, where A=(aik) is an infinite matrix of complex numbers.
M. Mursaleen, A. Alotaibi, Sunil K. Sharma   +2 more
doaj   +1 more source

Graphene Oxide‐Supported Chromium‐Containing Polyoxometalate as an Efficient Heterogeneous Catalyst for Nitroarene Reduction Under Mild Conditions

Global Challenges, Volume 10, Issue 9, September 2026.
A chromium‐substituted monovacant Keggin polyanion was immobilized on the surface of graphene oxide. The obtained nanocatalyst showed high catalytic activity in the reduction of various nitroarenes under mild conditions. GC‐MS analysis confirmed the direct pathway for reduction of nitroarenes in the presence of the catalyst.
Maryam Khalaji‐Verjani, Majid Masteri‐Farahani, Alireza Badiei, Ghodsi Mohammadi Ziarani, Senem Akkoc, Mehran Feizi‐Dehnayebi   +5 more
wiley   +1 more source

On Lacunary ideal convergence of some sequences [PDF]

, 2017
In this paper, new classes of lacunary ideal convergent and lacunary ideal bounded sequences combining an infinite matrix and an Orlicz function are defined.
Dastan, Mahmut, Ilkhan, Merve, Kara, Emrah Evren   +2 more
core   +2 more sources