### Recent Submissions

• #### New contributions to the Hamiltonian and Lagrangian contact formalisms for dissipative mechanical systems and their symmetries ﻿

(2020-06-01)
Article
Restricted access - publisher's policy
We provide new insights into the contact Hamiltonian and Lagrangian formulations of dissipative mechanical systems. In particular, we state a new form of the contact dynamical equations, and we review two recently presented ...
• #### A canonical realization of the Weyl BMS symmetry ﻿

(Elsevier, 2020-12-10)
Article
Open Access
• #### Group inverse matrix of the normalized Laplacian on subdivision networks ﻿

(2020)
Article
Open Access
In this paper we consider a subdivision of a given network and we show how the group inverse matrix of the normalized laplacian of the subdivision network is related to the group inverse matrix of the normalized laplacian ...
• #### Embeddability and rate identifiability of Kimura 2-parameter matrices ﻿

(2020-03-01)
Article
Restricted access - publisher's policy
Deciding whether a substitution matrix is embeddable (i.e. the corresponding Markov process has a continuous-time realization) is an open problem even for 4×4 matrices. We study the embedding problem and rate identifiability ...
• #### Damage diagnosis for offshore wind turbine foundations based on the fractal dimension ﻿

(2020-10-05)
Article
Open Access
Cost-competitiveness of offshore wind depends heavily in its capacity to switch preventive maintenance to condition-based maintenance. That is, to monitor the actual condition of the wind turbine (WT) to decide when and ...
• #### Rigidity of cotangent lifts and integrable systems ﻿

(2020-11)
Article
Open Access
In this article we generalize a theorem by Palais on the rigidity of compact group actions to cotangent lifts. We use this result to prove rigidity for integrable systems on symplectic manifolds including systems with ...
• #### Embeddability of Kimura 3ST Markov matrices ﻿

(2018-05-14)
Article
Open Access
In this note, we characterize the embeddability of generic Kimura 3ST Markov matrices in terms of their eigenvalues. As a consequence, we are able to compute the volume of such matrices relative to the volume of all Markov ...
• #### The uncoupling limit of identical Hopf bifurcations with an application to perceptual bistability ﻿

(2019-12-01)
Article
Open Access
We study the dynamics arising when two identical oscillators are coupled near a Hopfbifurcation where we assume a parameter uncouples the system at = 0. Using anormal form forN= 2 identical systems undergoing Hopf bifurcation, ...
• #### Some properties for bisemivalues on bicooperative games ﻿

(2020-02-29)
Article
Restricted access - publisher's policy
In this work, we focus on bicooperative games, a variation of the classic cooperative games, and investigate the conditions for the coefficients of the bisemivalues—a generalization of semivalues for cooperative games—necessary ...
• #### Fixed subgroups and computation of auto-fixed closures in free-abelian times free groups ﻿

(2020-04-01)
Article
Open Access
The classical result by Dyer–Scott about fixed subgroups of finite order automor-phisms of Fnbeing free factors of Fn is no longer true inZm×Fn. Within this more generalcontext, we prove a relaxed version in the spirit of ...
• #### Vibration-based detection and classification of structural changes using principal component analysis and t-distributed stochastic neighbor embedding ﻿

(Wiley, 2020-03-05)
Article
Open Access
This paper describes a structural health monitoring strategy to detect and classify structural changes in structures that can be equipped with sensors. The proposed approach is based on the t-distributed stochastic neighbor ...
• #### Sufficient conditions for a digraph to admit a (1,=l)-identifying code ﻿

(2019)
Article
Open Access
A (1, = )-identifying code in a digraph D is a subset C of vertices of D such that all distinct subsets of vertices of cardinality at most  have distinct closed in-neighbourhoods within C. In this paper, we give some ...