A compact set K is self-conformal if it is a finite union of its images by conformal contractions. It is well known that if the conformal contractions satisfy the “open set condition” (OSC), then K has positive sdimensional Hausdorff measure, where s is the solution of Bowen’s pressure equation. We prove that the OSC, the strong OSC, and positivity of the s-dimensional Hausdorff measure are equ...

For a closed subset K of a compact metric space A possessing an α-regular measure μ with μ(K) > 0, we prove that whenever s > α, any sequence of weighted minimal Riesz s-energy configurations ωN = {x i,N} N i=1 on K (for ‘nice’ weights) is quasi-uniform in the sense that the ratios of its mesh norm to separation distance remain bounded as N grows large. Furthermore, if K is an α-rectifiable com...

Hausdorff dimension assigns a dimension value to each subset of an arbitrary metric space. In Euclidean space, this concept coincides with our intuition that smooth curves have dimension 1 and smooth surfaces have dimension 2, but from its introduction in 1918 [23] Hausdorff noted that many sets have noninteger dimension, what he called “fractional dimension”. The development and applications o...

The component matrix, Laplacian Distance Peripheral distance of the cyclotomic graphs and some properties are found. D-energy, $D_{p}$-energy, $D^{L}$-energy indices determined. For real symmetric matrices, matrices that attain maximum $L, L_{s}$ minimum S calculated. Hausdorff optimal matching evaluated.

We have pursued in the literature a fractal-like structure for the fractional quantum Halll effect-FQHE which consider the Hausdorff dimension associated with the quantum mechanics paths and the spin of the particles or quasiparticles termed fractons. These objects carry rational or irrational values of spin and satisfy a fractal distribution function associated with a fractal von Neumann entro...

Dedicated to Professor WeiYue Ding on the occasion of his 60th birthday Abstract For k ≥ 3, we establish new estimate on Hausdorff dimensions of the singular set of stable-stationary harmonic maps to the sphere S. We show that the singular set of stable-stationary harmonic maps from B to S is the union of finitely many isolated singular points and finitely many Hölder continuous curves. We also...

We show that the proximity inductive dimension defined by Isbell agrees with Brouwer originally described (for Polish spaces without isolated points) on class of compact Hausdorff spaces. This shows Fedorchuk?s example a space whose exceeds its Lebesgue covering is an as Smirnov. answers Isbell?s question whether or not and coincide.

We investigate graph-directed iterated function systems in mixed Euclidean and p-adic spaces. Hausdorff measure and Hausdorff dimension in such spaces are defined, and an upper bound for the Hausdorff dimension is obtained. The relation between the Haar measure and the Hausdorff measure is clarified. Finally, we discus an example in R×Q2 and calculate upper and lower bounds for its Hausdorff di...