Poincaré and Sobolev inequalities for vector fields satisfying Hörmander's condition in variable exponent Sobolev spaces

Verfasser / Beitragende:
[Xia Li, Guo Lu, Han Tang]
Ort, Verlag, Jahr:
2015
Enthalten in:
Acta Mathematica Sinica, English Series, 31/7(2015-07-01), 1067-1085
Format:
Artikel (online)
ID: 605461317
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024 7 0 |a 10.1007/s10114-015-4488-x  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10114-015-4488-x 
245 0 0 |a Poincaré and Sobolev inequalities for vector fields satisfying Hörmander's condition in variable exponent Sobolev spaces  |h [Elektronische Daten]  |c [Xia Li, Guo Lu, Han Tang] 
520 3 |a In this paper, we will establish Poincaré inequalities in variable exponent non-isotropic Sobolev spaces. The crucial part is that we prove the boundedness of the fractional integral operator on variable exponent Lebesgue spaces on spaces of homogeneous type. We obtain the first order Poincaré inequalities for vector fields satisfying Hörmander's condition in variable non-isotropic Sobolev spaces. We also set up the higher order Poincaré inequalities with variable exponents on stratified Lie groups. Moreover, we get the Sobolev inequalities in variable exponent Sobolev spaces on whole stratified Lie groups. These inequalities are important and basic tools in studying nonlinear subelliptic PDEs with variable exponents such as the p(x)-subLaplacian. Our results are only stated and proved for vector fields satisfying Hörmander's condition, but they also hold for Grushin vector fields as well with obvious modifications. 
540 |a Institute of Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Chinese Mathematical Society and Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Poincaré inequalities  |2 nationallicence 
690 7 |a the representation formula  |2 nationallicence 
690 7 |a fractional integrals on homogeneous spaces  |2 nationallicence 
690 7 |a vector fields satisfying Hörmander's condition  |2 nationallicence 
690 7 |a stratified groups  |2 nationallicence 
690 7 |a high order non-isotropic Sobolev spaces with variable exponents  |2 nationallicence 
690 7 |a Sobolev inequalities with variable exponents  |2 nationallicence 
700 1 |a Li  |D Xia  |u School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, 100875, Beijing, P. R. China  |4 aut 
700 1 |a Lu  |D Guo  |u Department of Mathematics, Wayne State University, 48202, Detroit, MI, USA  |4 aut 
700 1 |a Tang  |D Han  |u School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, 100875, Beijing, P. R. China  |4 aut 
773 0 |t Acta Mathematica Sinica, English Series  |d Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society  |g 31/7(2015-07-01), 1067-1085  |x 1439-8516  |q 31:7<1067  |1 2015  |2 31  |o 10114 
856 4 0 |u https://doi.org/10.1007/s10114-015-4488-x  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10114-015-4488-x  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Li  |D Xia  |u School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, 100875, Beijing, P. R. China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lu  |D Guo  |u Department of Mathematics, Wayne State University, 48202, Detroit, MI, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Tang  |D Han  |u School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, 100875, Beijing, P. R. China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Acta Mathematica Sinica, English Series  |d Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society  |g 31/7(2015-07-01), 1067-1085  |x 1439-8516  |q 31:7<1067  |1 2015  |2 31  |o 10114