security hw1 solution - i Not all birds can fly ii A...

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IS2150/TEL2810 Introduction to Security Solution HW1 2011 1) Exercise on Propositional/Predicate logic & Induction [15 Points] (a) Express the following sentences in propositional//first order logic. Be sure to define all propositional components (e.g., predicate function, constants, and variables).
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Unformatted text preview: i) Not all birds can fly. ii) A directory is older than the directories and the files that it contains. (b) Prove by using Induction the following 2) Exercise on Lattice [ [15 Points] ii) Exercises 2(c) (note checking for absence of right is not allowed!!) from section 2.6...
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