The Point-to-Set Principle and the dimensions of Hamel bases

Author:

Lutz Jack H.1,Qi Renrui2,Yu Liang3

Affiliation:

1. Department of Computer Science, Iowa State University, Ames, IA 50011, USA

2. School of Mathematics and Statistics, Victoria University of Wellington, Wellington, New Zealand

3. Department of Mathematics, Nanjing University, Jiangsu Province 210093, P.R. of China

Abstract

We prove that, for every 0 ⩽ s ⩽ 1, there is a Hamel basis of the vector space of reals over the field of rationals that has Hausdorff dimension s. The logic of our proof is of particular interest. The statement of our theorem is classical; it does not involve the theory of computing. However, our proof makes essential use of algorithmic fractal dimension–a computability-theoretic construct–and the point-to-set principle of J. Lutz and N. Lutz (2018).

Publisher

IOS Press

Subject

Artificial Intelligence,Computational Theory and Mathematics,Computer Science Applications,Theoretical Computer Science

Reference27 articles.

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2. A. Blass, Existence of bases implies the axiom of choice, Contemporary Mathematics 31 (1984).

3. Sums of Cantor sets yielding an interval;Cabrelli;Journal of the Australian Mathematical Society,2002

4. R.G. Downey and D.R. Hirschfeldt, Algorithmic Randomness and Complexity, Springer Science & Business Media, 2010.

5. P.R. Halmos, Finite-Dimensional Vector Spaces, Dover, 2017.

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