Search Results - "MOLTER, URSULA"

Furstenberg sets for a fractal set of directions by MOLTER, URSULA, RELA, EZEQUIEL

“…In this paper we study the behavior of the size of Furstenberg sets with respect to the size of the set of directions defining it. For any pair \alpha ,\beta…”
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CLASSIFYING CANTOR SETS BY THEIR FRACTAL DIMENSIONS by CABRELLI, CARLOS A., HARE, KATHRYN E., MOLTER, URSULA M.

“…In this article we study Cantor sets defined by monotone sequences, in the sense of Besicovich and Taylor. We classify these Cantor sets in terms of their…”
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Countable contraction mappings in metric spaces: invariant sets and measure by Barrozo María, Molter Ursula

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Dimension functions of Cantor sets by Garcia, Ignacio, Molter, Ursula, Scotto, Roberto

“…We estimate the packing measure of Cantor sets associated to non-increasing sequences through their decay. This result, dual to one obtained by Besicovitch and…”
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Learning the model from the data by Cabrelli, Carlos, Molter, Ursula

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Generalized 2-Microlocal Frontier Prescription by Molter, Ursula, Rosenblatt, Mariel

“…The characterization of local regularity is a fundamental issue in signal and image processing, since it contains relevant information about the underlying…”
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On the Hausdorff h-measure of cantor sets by CABRELLI, Carlos, MENDIVIL, Franklin, MOLTER, Ursula M, SHONKWILER, Ronald

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Dynamical sampling on finite index sets by Cabrelli, Carlos, Molter, Ursula, Paternostro, Victoria, Philipp, Friedrich

“…We consider bounded operators A acting iteratively on a finite set of vectors { f i : i ∈ I } in a Hilbert space ℌ and address the problem of providing…”
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Local bases for refinable spaces by CABRELLI, Carlos, HEINEKEN, Sigrid B, MOLTER, Ursula M

“…We provide a new representation of a refinable shift invariant space with a compactly supported generator, in terms of functions with a special property of…”
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Continuous and discrete dynamical sampling by Díaz Martín, Rocío, Medri, Ivan, Molter, Ursula

“…In this paper we study the continuous dynamical sampling problem at infinite time in a complex Hilbert space H. We find necessary and sufficient conditions on…”
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Optimal non-linear models by Molter, Ursula M, Aldroubi, Akram, Cabrelli, Carlos A

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Small Furstenberg sets by Molter, Ursula, Rela, Ezequiel

“…For α in (0,1], a subset E of R2 is called a Furstenberg set of type α or Fα-set if for each direction e in the unit circle there is a line segment ℓe in the…”
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Multi-orbital Frames Through Model Spaces by Cabrelli, Carlos, Molter, Ursula, Suárez, Daniel

“…We characterize the normal operators A on ℓ 2 and the elements a i ∈ ℓ 2 , with 1 ≤ i ≤ m , such that the sequence { A n a 1 , … , A n a m } n ≥ 0 is a frame…”
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Time–frequency shift invariance and the Amalgam Balian–Low theorem by Cabrelli, Carlos, Molter, Ursula, Pfander, Götz E.

“…We consider smoothness properties of the generator of a principal Gabor space on the real line which is invariant under some additional translation–modulation…”
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Improving dimension estimates for Furstenberg-type sets by Molter, Ursula, Rela, Ezequiel

“…In this paper we study the problem of estimating the generalized Hausdorff dimension of Furstenberg sets in the plane. For α ∈ ( 0 , 1 ] , a set F in the plane…”
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Approximation by crystal-refinable functions by Molter, Ursula, Moure, María del Carmen, Quintero, Alejandro

“…Let Γ be a crystal group in R d . A function φ : R d ⟶ C is said to be crystal-refinable (or Γ -refinable) if it is a linear combination of finitely many of…”
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Non-uniform painless decompositions for anisotropic Besov and Triebel–Lizorkin spaces by Cabrelli, Carlos, Molter, Ursula, Romero, José Luis

“…In this article we construct affine systems that provide a simultaneous atomic decomposition for a wide class of functional spaces including the Lebesgue…”
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Generalized Self-Similarity by Cabrelli, Carlos A, Molter, Ursula M

“…We prove the existence ofLpfunctions satisfying a kind of self-similarity condition. This is achieved by solving a functional equation by means of the…”
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Invariance of a Shift-Invariant Space by Aldroubi, Akram, Cabrelli, Carlos, Heil, Christopher, Kornelson, Keri, Molter, Ursula

“…A shift-invariant space is a space of functions that is invariant under integer translations. Such spaces are often used as models for spaces of signals and…”
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A linear time algorithm for a matching problem on the circle by Cabrelli, Carlos A., Molter, Ursula M.

“…A paper describes a simple linear time algorithm to find a minimal matching for 2 ordered sets in the circle. This is done by showing that the problem can be…”
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