Papers

Mar
13
Construction of invariant features for time-domain EEG/MEG signals using Grassmann manifolds

Construction of invariant features for time-domain EEG/MEG signals using Grassmann manifolds

Rikkert Hindriks, Thomas O. Rot, Michel J.A.M. van Putten and Prejaas Tewarie A challenge in interpreting features derived
1 min read
Mar
13
Non-linear proper Fredholm maps and the stable homotopy groups of spheres

Non-linear proper Fredholm maps and the stable homotopy groups of spheres

Thomas O. Rot and Lauran Toussaint We classify non-linear proper Fredholm maps between Hilbert spaces, up to proper homotopy, in
1 min read
Mar
11
Computing p-presentation distances is hard

Computing p-presentation distances is hard

Håvard Bakke Bjerkevik, Magnus Bakke Botnan Recently, p-presentation distances for p∈[1,∞] were introduced for merge trees and multiparameter persistence
1 min read
Mar
07
Continuation sheaves in dynamics: Sheaf cohomology and bifurcation.

Continuation sheaves in dynamics: Sheaf cohomology and bifurcation.

By K.A. Dowling, W.D. Kalies and R.C.A.M. Vandervorst Algebraic structures such as the lattices of
1 min read
Feb
14
At the end of the spectrum: Chromatic bounds for the largest eigenvalue of the normalized Laplacian

At the end of the spectrum: Chromatic bounds for the largest eigenvalue of the normalized Laplacian

Lies Beers and Raffaella Mulas Abstract For a graph with largest normalized Laplacian eigenvalue \(\lambda_N\) and (vertex) coloring number
1 min read
Jan
01
There is no going back: Properties of the non-backtracking Laplacian

There is no going back: Properties of the non-backtracking Laplacian

Raffaella Mulas, Dong Zhang and Giulio Zucal Abstract We prove new properties of the non-backtracking graph and the non-backtracking Laplacian
1 min read
Dec
04
The Algebra of Semi-flows: A Tale of Two Topologies

The Algebra of Semi-flows: A Tale of Two Topologies

By K. Spendlove and R.C.A.M. Vandervorst To capture the global structure of a dynamical system we reformulate
1 min read