A Review of The Disteributional Derivatives in The Littlewoodpaley Inequalities

چکیده مقاله

  We known that from the univariate wavelet , we can construct efficient bases for (ℝ) and other function spaces by dilation and shifts. Also using Given a univariate function , we can obtain a multivariate family of functions by taking tensor products. In this paper by using Littlewood-paley inequalities we will make for our approach the some assumptions a bout the  multivariate basis and its dual basis.We study the wavelet bases formed by tensor products of univariate wavelets. From that the Littlewood-paley theory applies to many other orthogonal and nonorthogonal expansions, in this paper first by using Littlewood-paley inequalities we stated the assumptions a bout multivariate basis. Then under concideration univariate wavelet we define the seminorm for the set of all functions in whose distributional derivatives are in  space, also in format a theorem we acquired Necessary and sufficient condition to belong members of  to . 

دریافت لینک دانلود مقاله