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Despite the claimed benefits of e-voting initiatives, wider adoption of e-voting mechanisms and implementation processes is slower than expected. Several technical, social, and cultural challenges hinder generability and applicability of e-voting. Amongst them, the evaluation and harmonization of e-voting systems, given different legal and statutor...
The implantation of Remote Electronic Voting (REV) systems to Electoral Processes is happening at a slower pace than anticipated. One of the relevant factors explaining that reality is the lack of studies about the Cryptographic Schemes and Primitives applied to the existing REV solutions. In this paper, the authors review the main cryptographic sc...
Let R be a principal ideal domain. In this paper we prove that, for a large class of linear systems, dynamic feedback over R is equivalent to static feedback over a quotient ring of R. In particular, when R is the ring of integers ZZ one has that the static feedback classification problem over finite rings is equivalent to the dynamic feedback clas...
An open question in Control Theory over commutative rings is: When does dynamic feedback equivalence imply (static) feedback equivalence? A second open problem is: Given a linear system Σ=(A,B), when does there exist a matrix F such that A+BF is invertible? In this paper we solve both questions, obtaining two characterizations of stable rings.