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Express the following correctness properties in LTL. Defne propositions/variables to model the events mentioned in the question.
(a) If a parent process calls the blocking waitpid() system call then it is blocked until the child process terminates.
(b) If a process P calls down() on a binary semaphore and later process Q calls down() on the same semaphore before P calls up() on it, Q gets blocked until P calls up(), if P ever calls up().
(c) In the Singleton design pattern, an instance of the Singleton class is created at most once irregardless of how many times getInstance() method is called.
Rewrite the productions for each of the following nonterminals as right regular grammars: Identifier, Float. Show the moves made using the DFSA for identifiers in accepting.
Argue that the following prob is NP Complete. Given list of positive integers, u1,u2,...un (in binary representation) and asked if there is partition of this set into 3 subsets, each of which has same sum.
Give a construction that assumes you are given a DFA for L and show how to construct an NFA (with or without ε-moves) to recognize sort(L).
Consider a logic function with three outputs, A , B , and C , and three inputs, D , E , and F . The function is defined as follows: A is true if at least one input is true, B is true
Write some examples of declarative knowledge. Write some examples of procedural knowledge. Then, compare examples, highlighting the similarities & differences.
Discuss the impact of Moore's law on data center costs on such things as servers and communications equipment. List at least 3 steps or recommendations your data center can take to offset some or all of the effect of Moore's law.
We know by rice's theorem that none of the following problems are decidable. However,are they recursively enumerable,or non-RE? IS L(M) infinite?
Write down a structural induction principle for the PlayTree free type
How many equivalence classes does this relation have and what are they? Use these equivalence classes to construct the minimal DFA for the language.
Suppose f is a function that returns the result of reversing the string of symbols given as its input, and g. What ambiguity exists in the statement x?
Express the following set as a regular expression: The set of all strings of length at least three over {0,1} such that every three consecutive.
Consider the following grammar: S S (S) | ε. Construct and DFA or LR(0) items for this grammar. Construct SLR(1) parsing table.
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