Department of Mathematical Sciences

  • Skjernvej 4A

    9220 Aalborg Ø

    Denmark

Research Output 1985 2019

Filter
Working paper
2019

An obstruction to contractibility of spaces of directed paths

Belton, R., Brooks, R., Ebli, S., Fajstrup, L., fasy, B. T., RAy, C., Sanderson, N. & Vidaurre, E., 4 Feb 2019, ArXiv, 16 p.

Research output: Working paperResearch

Open Access

Approximation spaces of deep neural networks

Gribonval, R., Kutyniok, G., Nielsen, M. & Voigtlaender, F., 3 May 2019, 63 p.

Research output: Working paperResearch

Approximation Space
Neural Networks
Nonlinearity
Activation Function
Approximation Theory

On regularity of the logarithmic forward map of electrical impedance tomography

Garde, H., Hyvönen, N. & Kuutela, T., 2019, arXiv.org.

Research output: Working paperResearch

Electrical Impedance Tomography
Logarithm
Dirichlet-to-Neumann Map
Logarithmic
Regularity
electrical impedance
balls
tomography
inclusions
impedance
electrical impedance
tomography
conductivity
inclusions
uniqueness

Spurious multivariate regressions under fractionally integrated processes

Lasak, K., Ventosa-Santaulària, D., Ramírez-Vargas, R. & Vera-Valdés, J. E., 2019, (Submitted).

Research output: Working paperResearchpeer-review

Spurious Regression
Integrated Process
Multivariate Regression
F Test
Long Memory

Steane-Enlargement of Quantum Codes from the Hermitian Curve

Christensen, R. B. & Geil, O., 22 Apr 2019, arXiv.org, 11 p.

Research output: Working paperResearch

Open Access
Open Access
Resolvent
Norm
Estimate
Closed Operator
Unbounded Operators

Atomic and molecular decomposition of homogeneous spaces of distributions associated to non-negative self-adjoint operators

Georgiadis, A., Kerkyacharian, G., Kyriazis, G. & Petrushev, P., 2018, ArXiv, 41 p.

Research output: Working paperResearch

Triebel-Lizorkin Space
Homogeneous Space
Self-adjoint Operator
Non-negative
Atomic Decomposition

Cut-off Theorems for the PV-model

Fajstrup, L., 2018, ArXiv, 14 p.

Research output: Working paperResearch

Open Access

Instability of resonances under Stark perturbations

Jensen, A. & Yajima, K., 2018, ArXiv, 11 p.

Research output: Working paperResearch

Kernel and wavelet density estimators on manifolds and more general metric spaces

Cleanthous, G., Georgiadis, A., Kerkyacharian, G., Petrushev, P. & Picard, D., 2018, ArXiv, 35 p.

Research output: Working paperResearch

Wavelet Estimator
Density Estimator
Metric space
kernel
Functional Calculus
Pseudodifferential Operators
Magnetic Field
Lipschitz Continuity
Hausdorff Distance
Spectral Gap

Nonfractional Memory: Filtering, Antipersistence, and Forecasting

Vera-Valdés, J. E., 20 Jan 2018, ArXiv, p. 1-17, 17 p.

Research output: Working paperResearch

Open Access
Data storage equipment
Agglomeration
Autocorrelation
Mathematical operators

On nested code pairs from the Hermitian curve

Christensen, R. B. & Geil, H. O., 2018, arXiv.org, 28 p.

Research output: Working paperResearch

Open Access
Hermitian Curve
Minimum Distance
Codimension
Algebraic-geometric Codes
Secret Sharing Scheme

Pair component categories for directed spaces

Raussen, M. H., 2018, ArXiv, 27 p.

Research output: Working paperResearch

Homotopy
Path Space
Morphisms
Homology
Homotopy Equivalence

The suspended free loop space of a symmetric space

Bökstedt, M. & Ottosen, I. M., 2018, arXiv.org, 45 p.

Research output: Working paperResearch

2017
1 Citation (Scopus)

Nonlinear approximation with nonstationary Gabor frames

Ottosen, E. S. & Nielsen, M., 2017, ArXiv, 16 p.

Research output: Working paperResearch

On Long Memory Origins and Forecast Horizons

Vera-Valdés, J. E., 21 Dec 2017, ArXiv, 19 p.

Research output: Working paperResearch

Open Access
Long memory
Forecast horizon
Autoregressive model
Moving average
Integrated

Resolvent expansion for the Schrödinger operator on a graph with infinite rays

Ito, K. & Jensen, A., 2017, ArXiv, 55 p.

Research output: Working paperResearch

Open Access

Weighted Thresholding and Nonlinear Approximation

Ottosen, E. S. & Nielsen, M., Nov 2017, ArXiv, 22 p.

Research output: Working paperResearch

Nonlinear Approximation
Thresholding
Lasso
Coefficient
Denoising
2016

A characterization of sparse nonstationary Gabor expansions

Ottosen, E. S. & Nielsen, M., Jun 2016, ArXiv, 25 p.

Research output: Working paperResearch

Gabor Frames
Decompose
Banach Frames
Approximation Error
Coefficient

A Hochschild-Kostant-Rosenberg theorem for cyclic homology

Bökstedt, M. & Ottosen, I. M., 2016, ArXiv, 36 p.

Research output: Working paperResearch

A Phase Vocoder Based on Nonstationary Gabor Frames

Ottosen, E. S. & Dörfler, M., 2016, ArXiv, 9 p.

Research output: Working paperResearch

Generalized sampling in Julia

Jacobsen, C. R. D., Nielsen, M. & Rasmussen, M. G., 2016, ArXiv, 18 p.

Research output: Working paperResearch

More results on the number of zeros of multiplicity at least r

Geil, H. O. & Thomsen, C., 2016, ArXiv, 14 p.

Research output: Working paperResearch

More results on the number of zeros of multiplicity at least r

Geil, H. O. & Thomsen, C., 2016, ArXiv, 14 p.

Research output: Working paperResearch

On asymptotically good ramp secret sharing schemes

Geil, H. O., Martin, S., Martinez Peñas, U., Matsumoto, R. & Ruano Benito, D., 2016, ArXiv, 28 p.

Research output: Working paperResearch

On the adiabatic theorem when eigenvalues dive into the continuum

Cornean, D. H., Jensen, A., Knörr, H. K. & Nenciu, G., 8 Dec 2016, ArXiv, 21 p. (arXiv.org (e-prints)).

Research output: Working paperResearch

eigenvalues
theorems
continuums
continuous spectra
energy

On the distance of stabilizer quantum codes from J-affine variety codes

Galindo, C., Geil, H. O., Hernando, F. & Ruano Benito, D., 2016, ArXiv, 26 p.

Research output: Working paperResearch

Resolvent expansions for the Schrödinger operator on the discrete half-line

Ito, K. & Jensen, A., 2016, ArXiv, 36 p.

Research output: Working paperResearch

2015

Homology of Spaces of Directed Paths in Euclidean Pattern Spaces

Meshulam, R. & Raussen, M. H., 2015, ArXiv, 16 p.

Research output: Working paperResearch

Invertibility of infinitely divisible continuous-time moving average processes

Orimar, S. A., 2015, arXiv.org, 12 p. (arXiv.org (e-prints)).

Research output: Working paperResearch

Recovery
Autocovariance Function
Electricity Market
Nonparametric Estimation
Stationary Process
Kernel Function

Unbalanced Regressions and the Predictive Equation

Osterrieder, D., Ventosa-Santaulària, D. & Vera-Valdés, J. E., 4 Feb 2015, Aarhus Universitetsforlag, p. 1 - 56.

Research output: Working paperResearch

Open Access
Risk process
Risk-return trade-off
Empirical analysis
Data generating process
Statistical inference
2008

On the Generalized Brownian Motion and its Applications in Finance

Høg, E., Frederiksen, P. H. & Schiemert, D., 2008, Aarhus School of Business, Aarhus University, 38 p.

Research output: Working paperResearch

2000