Computer Science
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user5721565
  • Member for 4 years
  • Last seen more than a month ago
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22
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22
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All Questions Answers
Score Newest
question
3
Are the languages $\{w\in \{a,b\}^* : \#_a(w) > \#_b(w) \}$ and $\{w\in \{a,b\}^* : \#_a(w) \neq \#_b(w) \}$ context free?
Sep 16, 2018
question
3
$L$ is a context free language so prefix$(L)$ is also a context free language
Sep 21, 2018
question
3
$a_k$ is $\{L :\exists M$ a pushdown automaton with bounded stack of size $k$ which accept $L\}$ what is the set $\bigcup_1^\infty a_k$?
Sep 26, 2018
answer
3
$L$ is a context free language so prefix$(L)$ is also a context free language
Sep 29, 2018
question
2
Using B+Tree to implement index, when the index-key size and the data-block size are of the same order
Sep 26, 2021
question
0
proving an automaton language for the language over $\{a,b\}^{*}$ : $w\in L$ if $aa$ is not an infix of $w$ ($aa$ doesn't appear in $w$)
Aug 8, 2018
question
0
what are the conditions for two NFAs to be equivalent?
Sep 6, 2018
question
0
A condition for $\emptyset \neq S\subset RE$ under which $L_S \notin RE$
Aug 19, 2019
question
0
How to build a TM which decides $L_k := \{(\langle M \rangle ,x)\in HP : |(\langle M \rangle ,x)| \le k \}$
May 13, 2020
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13
If $p$ is prime, then $x^2 +5y^2 = p \iff p\equiv 1,9 $ mod $(20)$.
5
Calculating $\mathbb{R}P^1$ fundamental group.

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