Computer Science Homework Solutions
Problem
#113145

Automata and Computability

Show that the collection of decidable languages is closed under the operations of
a. union.
b. concatenation.
c. star.
d. complementation.
e. intersection

Attached file(s):
Attachments
Problem A112.doc  View File

Attachment Content Summary (Note: view attachment at the above link before purchasing. Actual attachment content may vary slightly from that shown below.)

Problem A112.doc
Problem 12

Show that the collection of decidable languages is closed under the
operations of

union.

concatenation.

star.

complementation.

e. intersection
Solution
What is this?
By OTA - Overall OTA Rating
Mike Mikailov, PhD - 4.8/5
Purchase Cost Now
$2.19 CAD (was ~$19.95)
Included in Download
  • Plain text response
  • Attached file(s):
    • Problem+A112[1]_Sol.doc
$2.19 Instant Download
Add to Cart
Why you can trust BrainMass.com
  • Your Information is Secure
  • Best Online Academic Help Service
  • Students find real academic Success
Related Solutions
  • Automata and Computability - Let C be a language. Prove that C turing-recognizable if a decidable language D exists such that C = {x | y (x,y  D)}.
  • Automata and Computability - Show that the collection of Turing-recognizable languages is closed under the operations of a. union. b. concatenation. c. star. d. intersection
  • Automata and Computability - Let A = (attached) | R is a regular expression describing a language containing at least one string w that has 111 as a substring (i.e., w = x111y for some x and y)}. Show that A is decidable.
  • Automata and Computability - A useless state in a pushdown automaton is never entered on any input string. Consider the problem of testing whether a pushdown automaton has any useless states. Formulate this problem as a languag ...
  • Automata and Computability - Let A = (attached) R and S are regular expressions and L(R)  L(S) . Show that A is decidable.
Browse