| Records |
| Author |
Focardi, Riccardo; Gorrieri, Roberto; Lanotte, Ruggero; Maggiolo-Schettini, Andrea; Martinelli, Fabio; Tini, Simone; Tronci, Enrico |
| Title |
Formal Models of Timing Attacks on Web Privacy |
Type  |
Journal Article |
| Year |
2002 |
Publication |
Electronic Notes in Theoretical Computer Science |
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| Volume |
62 |
Issue |
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Pages |
229-243 |
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| Abstract |
We model a timing attack on web privacy proposed by Felten and Schneider by using three different approaches: HL-Timed Automata, SMV model checker, and tSPA Process Algebra. Some comparative analysis on the three approaches is derived. |
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TOSCA 2001, Theory of Concurrency, Higher Order Languages and Types |
Approved |
yes |
| Call Number |
Sapienza @ mari @ entcs02a |
Serial |
47 |
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| Author |
Alimguzhin, V.; Mari, F.; Melatti, I.; Salvo, I.; Tronci, E. |
| Title |
Linearising Discrete Time Hybrid Systems |
Type |
Journal Article |
| Year |
2017 |
Publication |
IEEE Transactions on Automatic Control |
Abbreviated Journal |
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| Volume |
62 |
Issue |
10 |
Pages |
5357-5364 |
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| Abstract |
Model Based Design approaches for embedded systems aim at generating correct-by-construction control software, guaranteeing that the closed loop system (controller and plant) meets given system level formal specifications. This technical note addresses control synthesis for safety and reachability properties of possibly non-linear discrete time hybrid systems. By means of syntactical transformations that require non-linear terms to be Lipschitz continuous functions, we over-approximate non-linear dynamics with a linear system whose controllers are guaranteed to be controllers of the original system. We evaluate performance of our approach on meaningful control synthesis benchmarks, also comparing it to a state-of-the-art tool. |
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0018-9286 |
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no |
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Sapienza @ mari @ ref7902199 |
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164 |
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| Author |
Tronci, Enrico |
| Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 1 |
Type |
Journal Article |
| Year |
1996 |
Publication |
Theoretical Computer Science |
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160 |
Issue |
1&2 |
Pages |
145-184 |
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yes |
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Sapienza @ mari @ tcs96 |
Serial |
54 |
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| Author |
Tronci, Enrico |
| Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 2 |
Type |
Journal Article |
| Year |
1996 |
Publication |
Theoretical Computer Science |
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160 |
Issue |
1&2 |
Pages |
185-216 |
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yes |
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Sapienza @ mari @ tcs96a |
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55 |
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| Author |
Tronci, Enrico |
| Title |
Defining Data Structures via Böhm-Out |
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Journal Article |
| Year |
1995 |
Publication |
J. Funct. Program. |
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| Volume |
5 |
Issue |
1 |
Pages |
51-64 |
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We show that any recursively enumerable subset of a data structure can be regarded as the solution set to a B??hm-out problem. |
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yes |
| Call Number |
Sapienza @ mari @ jfp95 |
Serial |
57 |
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| Author |
Böhm, Corrado; Tronci, Enrico |
| Title |
About Systems of Equations, X-Separability, and Left-Invertibility in the lambda-Calculus |
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Journal Article |
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1991 |
Publication |
Inf. Comput. |
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90 |
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1 |
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1-32 |
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yes |
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Sapienza @ mari @ infcomp91 |
Serial |
59 |
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| Author |
Piperno, Adolfo; Tronci, Enrico |
| Title |
Regular Systems of Equations in λ-calculus |
Type |
Journal Article |
| Year |
1990 |
Publication |
Int. J. Found. Comput. Sci. |
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| Volume |
1 |
Issue |
3 |
Pages |
325-340 |
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Many problems arising in equational theories like Lambda-calculus and Combinatory Logic can be expressed by combinatory equations or systems of equations. However, the solvability problem for an arbitrarily given class of systems is in general undecidable. In this paper we shall focus our attention on a decidable class of systems, which will be called regular systems, and we shall analyse some classical problems and well-known properties of Lambda-calculus that can be described and solved by means of regular systems. The significance of such class will be emphasized showing that for slight extensions of it the solvability problem turns out to be undecidable. |
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yes |
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Sapienza @ mari @ ijfcs90 |
Serial |
60 |
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| Author |
Intrigila, Benedetto; Salvo, Ivano; Sorgi, Stefano |
| Title |
A characterization of weakly Church-Rosser abstract reduction systems that are not Church-Rosser |
Type |
Journal Article |
| Year |
2001 |
Publication |
Information and Computation |
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| Volume |
171 |
Issue |
2 |
Pages |
137-155 |
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Basic properties of rewriting systems can be stated in the framework of abstract reduction systems (ARS). Properties like confluence (or Church-Rosser, CR) and weak confluence (or weak Church-Rosser, WCR) and their relationships can be studied in this setting: as a matter of fact, well-known counterexamples to the implication WCR CR have been formulated as ARS. In this paper, starting from the observation that such counterexamples are structurally similar, we set out a graph-theoretic characterization of WCR ARS that is not CR in terms of a suitable class of reduction graphs, such that in every WCR not CR ARS, we can embed at least one element of this class. Moreover, we give a tighter characterization for a restricted class of ARS enjoying a suitable regularity condition. Finally, as a consequence of our approach, we prove some interesting results about ARS using the mathematical tools developed. In particular, we prove an extension of the Newman’s lemma and we find out conditions that, once assumed together with WCR property, ensure the unique normal form property. The Appendix treats two interesting examples, both generated by graph-rewriting rules, with specific combinatorial properties. |
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Academic Press, Inc. |
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Duluth, MN, USA |
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0890-5401 |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Intrigila-Salvo-Sorgi:01 |
Serial |
68 |
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| Author |
Bucciarelli, Antonio; Piperno, Adolfo; Salvo, Ivano |
| Title |
Intersection types and λ-definability |
Type |
Journal Article |
| Year |
2003 |
Publication |
Mathematical Structures in Computer Science |
Abbreviated Journal |
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| Volume |
13 |
Issue |
1 |
Pages |
15-53 |
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This paper presents a novel method for comparing computational properties of λ-terms that are typeable with intersection types, with respect to terms that are typeable with Curry types. We introduce a translation from intersection typing derivations to Curry typeable terms that is preserved by β-reduction: this allows the simulation of a computation starting from a term typeable in the intersection discipline by means of a computation starting from a simply typeable term. Our approach proves strong normalisation for the intersection system naturally by means of purely syntactical techniques. The paper extends the results presented in Bucciarelli et al. (1999) to the whole intersection type system of Barendregt, Coppo and Dezani, thus providing a complete proof of the conjecture, proposed in Leivant (1990), that all functions uniformly definable using intersection types are already definable using Curry types. |
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Cambridge University Press |
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New York, NY, USA |
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0960-1295 |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Bucciarelli-Piperno-Salvo:MSCS-03 |
Serial |
69 |
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| Author |
Bucciarelli, Antonio; Salvo, Ivano |
| Title |
Totality, Definability and Boolean Circuits |
Type |
Journal Article |
| Year |
1998 |
Publication |
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| Volume |
1443 |
Issue |
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Pages |
808-819 |
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In the type frame originating from the flat domain of boolean values, we single out elements which are hereditarily total. We show that these elements can be defined, up to total equivalence, by sequential programs. The elements of an equivalence class of the totality equivalence relation (totality class) can be seen as different algorithms for computing a given set-theoretic boolean function. We show that the bottom element of a totality class, which is sequential, corresponds to the most eager algorithm, and the top to the laziest one. Finally we suggest a link between size of totality classes and a well known measure of complexity of boolean functions, namely their sensitivity. |
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Springer |
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yes |
| Call Number |
Sapienza @ mari @ bucciarelli-salvo:98 |
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70 |
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