Download Decidability, Completeness, and Extensions of Linear by Lichtenstein O. PDF

Download Decidability, Completeness, and Extensions of Linear by Lichtenstein O. PDF

By Lichtenstein O.

This thesis was once performed below the supervision of Prof. A. Pnueli.

This study offers with decidability, completeness, and extensions of linear
time temporal good judgment. those homes are tested first for a basic type
of versions, that aren't constrained to the execution of a selected application
(general validity), after which thought of for a category of versions representing
computations of a given software (validity over program).

The study comprises 3 major elements: the 1st bargains with Propositional Temporal good judgment (PTL), the second one offers with mu-Temporal good judgment
(muTL), that is PTL augmented by means of fixpoint operators, and the 3rd half
investigates XCTL that's a model of temporal good judgment that explicitly refers
to a working clock, which will specify actual time homes of reactive
programs.

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Additional resources for Decidability, Completeness, and Extensions of Linear Temporal Logic [PhD Thesis]

Example text

17 1017 ) is indeed expressible as the sum of two primes, it is still currently unknown whether every even integer greater than 2 can be so expressed. 2 Sentences that cannot be viewed as true or false are not propositions. These include instructions, questions, exclamations, exhortations, demands, opinions, and so forth. Hence the following are not propositions. 1. Keep off the grass. an instruction 2. Formal methods are vital for software development. an opinion 3. Will you come to my party? a question Negation Given a proposition P , adding the prefix ‘It is not the case that .

2. Let P : Jo is on holiday. Q: Jo goes swimming. R: Jo studies logic. Translate each of the following propositions into naturally sounding English sentences. (i) P Q (ii) Q ⇒ ¬R (iii) R ∨ (P ⇒ Q) (iv) (R ∧ ¬Q) ⇒ ¬P (v) (P ∧ Q) ∨ R 30 Solution (i) This is an exclusive disjunction, so we need to ensure that this is made explicit in the natural language sentence. Hence we may express P Q in English as: Jo is on holiday or she goes swimming but not both. Note that, to keep the sentence as natural-sounding as possible, we have used the pronoun ‘she’ rather than repeat the proper noun ‘Jo’ twice in the same sentence.

This is the so-called inclusive use of disjunction and it is the default interpretation in logic. There is an alternative form of disjunction, called exclusive disjunction, that is denoted P Q. In this case, the (exclusive) disjunction of P and Q is false when both P and Q are true. The truth values of P Q are defined by the following truth table. P Q T T F F T F T F P Q F T T F For example, the statement Next week, I will work at home or visit a friend in Paris suggests an exclusive interpretation of ‘or’.

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