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Analysis in the Heisenberg group: weak s-John domains and the dimensions of graphs of Holder functions
Maki, John M.
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https://hdl.handle.net/2142/26279
Description
- Title
- Analysis in the Heisenberg group: weak s-John domains and the dimensions of graphs of Holder functions
- Author(s)
- Maki, John M.
- Issue Date
- 2011-08-26T15:21:11Z
- Director of Research (if dissertation) or Advisor (if thesis)
- Tyson, Jeremy T.
- Doctoral Committee Chair(s)
- Wu, Jang-Mei
- Committee Member(s)
- Tyson, Jeremy T.
- D'Angelo, John P.
- Merenkov, Sergiy A.
- Department of Study
- Mathematics
- Discipline
- Mathematics
- Degree Granting Institution
- University of Illinois at Urbana-Champaign
- Degree Name
- Ph.D.
- Degree Level
- Dissertation
- Date of Ingest
- 2011-08-26T15:21:11Z
- Keyword(s)
- Heisenberg group
- Poincare domain
- s-John domain
- weak s-John domain
- Carnot groups
- Holder graphs
- Sobolev graphs
- Abstract
- In this thesis, we provide connections between analytic properties in Euclidean R^n and analytic properties in sub-Riemannian Carnot groups. We introduce weak s-John domains, in analogy with weak John domains, and we prove that weak s-John is equivalent to a localized version. This is applied in showing that a bounded C^{1,alpha} domain in R^3 will be a weak s-John domain in the first Heisenberg group. This result is sharp, giving a precise value of s that depends only on alpha. We follow upon this by showing that a weak s-John domain in a general Carnot group will be a (q,p)-Poincare domain for certain p and q that depend only on s and the homogeneous dimension of the Carnot group. The final result gives, in a general Carnot group, an upper bound on the lower box dimension of the graph of an Euclidean Holder function, with application to the dimension of a Sobolev graph.
- Graduation Semester
- 2011-08
- Permalink
- http://hdl.handle.net/2142/26279
- Copyright and License Information
- Copyright 2010 John Maki
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