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Michael Sipser Edition 3 Exercise 4 Question 8 (Page No. 211)
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Let $T = \{(i, j, k)\mid i, j, k \in N \}$. Show that $T$ is countable.
michaelsipser
theoryofcomputation
turingmachine
countableuncountableset
proof
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Theory of Computation
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Michael Sipser Edition 3 Exercise 4 Question 9 (Page No. 211)
Review the way that we define sets to be the same size in Definition $4.12$ (page $203$). Show that “is the same size” is an equivalence relation.
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Oct 17, 2019
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Theory of Computation
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Lakshman Patel RJIT

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michaelsipser
theoryofcomputation
turingmachine
countableuncountableset
proof
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Michael Sipser Edition 3 Exercise 4 Question 11 (Page No. 211)
Let $INFINITE_{PDA} = \{\langle{ M \rangle} \mid \text{M is a PDA and L(M) is an infinite language}\}$. Show that $INFINITE_{PDA}$ is decidable.
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Oct 17, 2019
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Theory of Computation
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Lakshman Patel RJIT

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michaelsipser
theoryofcomputation
turingmachine
decidability
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Michael Sipser Edition 3 Exercise 4 Question 10 (Page No. 211)
Let $INFINITE_{DFA} = \{\langle{ A \rangle} \mid \text{ A is a DFA and L(A) is an infinite language}\}$. Show that $INFINITE_{DFA}$ is decidable.
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Oct 17, 2019
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Theory of Computation
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Lakshman Patel RJIT

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michaelsipser
theoryofcomputation
turingmachine
decidability
proof
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Michael Sipser Edition 3 Exercise 4 Question 7 (Page No. 211)
Let $B$ be the set of all infinite sequences over $\{0,1\}$. Show that $B$ is uncountable using a proof by diagonalization.
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Oct 17, 2019
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Theory of Computation
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Lakshman Patel RJIT

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