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117
Voted
CRYPTO
2010
Springer
15 years 3 months ago
2010
Springer
This paper presents a fully secure functional encryption scheme for a wide class of relations, that are specified by non-monotone access structures combined with inner-product rel...
126
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AUTOMATICA
2008
2008
Stabilizability of switched linear systems does not imply the existence of convex Lyapunov functions
15 years 28 days ago
Counterexamples are given which show that a linear switched system (with controlled switching) that can be stabilized by means of a suitable switching law does not necessarily admi...
81
Voted
ISSAC
2005
Springer
15 years 7 months ago
2005
Springer
Picard-Vessiot extensions for ordinary differential and difference equations are well known and are at the core of the associated Galois theories. In this paper, we construct fu...
123
Voted
AUTOMATICA
2005
15 years 2 months ago
2005
Based on a recent duality theory for linear differential inclusions (LDIs), the condition for stability of an LDI in terms of one Lyapunov function can be easily derived from that...
119
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ISCAS
2005
IEEE
15 years 8 months ago
2005
IEEE
— Piecewise linear Lyapunov functions are used to design control gain matrices so that closed systems are robust stable and attractive regions are expanded as large as possible i...