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Physical Sciences and Mathematics Commons

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TÜBİTAK

Turkish Journal of Mathematics

2019

Commutators

Articles 1 - 2 of 2

Full-Text Articles in Physical Sciences and Mathematics

Compactness Of The Commutators Of Intrinsic Square Functions On Weighted Lebesgue Spaces, Xiaomei Wu, Xiao Yu Jan 2019

Compactness Of The Commutators Of Intrinsic Square Functions On Weighted Lebesgue Spaces, Xiaomei Wu, Xiao Yu

Turkish Journal of Mathematics

The aim of this paper is to study the compactness for the commutators of intrinsic square functions, including the intrinsic $g_{\lambda}^*$-function and the intrinsic Littlewood-Paley g-function. Using a weighted version of the Frech\'{e}t-Kolmogorov-Riesz theorem, the compactness for their commutators generated with the CMO functions is obtained on the weighted Lebesgue spaces.


Some Sufficient Conditions For A Group To Be Abelian, Gary Walls Jan 2019

Some Sufficient Conditions For A Group To Be Abelian, Gary Walls

Turkish Journal of Mathematics

A group is said to satisfy a word $w$ in the symbols $\{x, x^{-1}, y, y^{-1} \}$ provided that if the 'x' and 'y' are replaced by arbitrary elements of the group then the equation $w=1$ is satisfied. This paper studies certain equations in words, as above, which together with other conditions imply that groups which satisfy these equations and conditions must be abelian.