Ghorbanalizadeh A,  Mikaeili nia M. On the Boundedness of Littlewood-Paley  $ g^{*}_{B, lambda}$   operator associated with Bessel differential operator.  mmr 2024; 10 (1) :1-17
URL: 
http://mmr.khu.ac.ir/article-1-3233-en.html     
                     
                    
                    
                    
					 
					
                 
                
                    
                    
                    
                    1- IASBS , gurbanalizade@gmail.com
 2- IASBS 
                    
                    
                    Abstract:       (1315 Views)
                    
                    
                    The study of classical Littlewood-Paley operators has an intrinsic interest for their essential role in harmonic analysis due to their applications in PDEs and other fields.
One of the Littlewood-Paley operators is   g λ *  operator which its   p,p  strong boundedness depends on the parameter  λ . For example, Fefferman showed strong boundedness of classical   g λ *  for  1<p<∞  in   L p   when  λ>max  1,  2 p .  In this work, We consider the Laplace-Bessel differential operator and correspondingly we define the relevant Littlewood-Paley operator   g B,λ *  to investigate both   L p,ν - boundedness of   g B,λ *  for  2≤P<∞  and  λ>1+  2v n   and its unboundedness for  0<λ<  2 P +  4ν pn  in   L p,ν   R + n . 
                     
                    
                    
                    
                    
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Anal  Received: 2021/09/5 | Revised: 2024/07/10 | Accepted: 2022/06/12 | Published: 2024/01/8 | ePublished: 2024/01/8