Golden gaskets: variations on the Sierpiński sieve

By David S. Broomhead, James Montaldi, Nikita Sidorov. 2003

53 citations recorded by the source corpus.

We consider the iterated function systems (IFSs) that consist of three general similitudes in the plane with centres at three non-collinear points, with a common contraction factor λ in (0, 1). As is well known, for λ = 1/2 the attractor, S_λ, is a fractal called the Sierpinski sieve and for λ < 1/2 it is also a fractal. Our goal is to study S_λ for this IFS for 1/2 < λ < 2/3 , i.e. when there are ‘overlaps’ in S_λ as well as ‘holes’. In this introductory paper we show that despite the overlaps (i.e. the breaking down of the open set condition (OSC)), the attractor can still be a totally self-similar fractal, although this happens only for a very special family of algebraic λ (so-called multinacci numbers). We evaluate the ausdorff dimension of S_λ for these special values by showing that S_λ is essentially the attractor for an infinite IFS that does satisfy the OSC. We also show that the set of points in the attractor with a unique ‘address’ is self-similar and compute its dimension. For non-multinacci values of λ we show that if λ is close to 2/3 , then S_λ has a non-empty interior. Finally we discuss higher-dimensional analogues of the model in question.

Subfields: Cell Biology, Mathematical Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/17480a53d7bee07716a538b354631aca626f48a9

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In Cell Biology

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  2. Mark Pollicott
  3. Károly Simon
  4. Ian D. Morris
  5. Pablo Shmerkin
  6. De-Jun Feng

In Mathematical Physics

  1. T. Jordan
  2. Mark Pollicott
  3. Károly Simon
  4. Pablo Shmerkin
  5. Ian D. Morris
  6. De-Jun Feng
  7. Fr'ed'eric Naud

In Statistical and Nonlinear Physics

  1. T. Jordan
  2. Mark Pollicott
  3. Károly Simon

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