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The fact that SL2 is closed under intersection but not under union implies that it is not closed under complement since, by DeMorgan's Theorem
L1 ∩ L2 =
We know that the intersection of SL2 languages is also SL2. If the complement of SL2 languages was also necessarily SL2, then would be SL2 contradicting the fact that there are SL2 languages whose union are not SL2.
Lemma The class of strictly 2-local languages is not closed under complement .
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1. Simulate a TM with infinite tape on both ends using a two-track TM with finite storage 2. Prove the following language is non-Turing recognizable using the diagnolization
s->0A0|1B1|BB A->C B->S|A C->S|null find useless symbol?
You are required to design a system that controls the speed of a fan's rotation. The speed at which the fan rotates is determined by the ambient temperature, i.e. as the temperatur
how many pendulum swings will it take to walk across the classroom?
Ask question #Minimum 100 words accepte
what are the advantages and disadvantages of wearable computers?
As de?ned the powerset construction builds a DFA with many states that can never be reached from Q′ 0 . Since they cannot be reached from Q′ 0 there is no path from Q′ 0 to a sta
State & prove pumping lemma for regular set. Show that for the language L={ap |p is a prime} is not regular
Find the Regular Grammar for the following Regular Expression: a(a+b)*(ab*+ba*)b.
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