Are the following sets closed under the following operations? If not, what are their respective closures?
What will be an ideal response?
a) The even length strings over the alphabet {a, b} under Kleene star.
b) The odd length strings over the alphabet {a, b} under concatenation.
a) Closed.
b) Not closed. The closure is all strings over the alphabet {a, b} with length at least 1.
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Seeing a reviewers' edits now cannot help you decide later whether to accept or reject each change as you step through each revision.
Answer the following statement true (T) or false (F)
Calculations are normally performed by __________ statements.
Fill in the blank(s) with the appropriate word(s).
____________________ represent the cases by which an actor uses and presumably benefits from the system.
Fill in the blank(s) with the appropriate word(s).
COGNITIVE ASSESSMENT Who usually requires less educational background for trainers than educational institutions require for instructors?
A. state agencies B. Federal agencies? C. corporations D. world banks