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Cohen pg175 FA2

Posted by kiolb 
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avatar Cohen pg175 FA2
June 04, 2008 10:28PM
Hi,

This machine doesn't represent L2 and r2 correctly IMHO.
It also accepts b's, without any a's?
The second paragraph below the FA's has a sentence "It ignores all b's", so FA2 must be the incorrect one.

Regards
B
Re: Cohen pg175 FA2
June 13, 2008 09:33AM
FA2 of course accepts the null string or words without any a's i.e. 0 a's since 0 is an even number. FA2 is the correct machine for L2 and r2.

In the paragraph description the b's are ignored to explain the way in which an even number of a'a are generated.
avatar Re: Cohen pg175 FA2
June 17, 2008 08:54AM
Yes. Thanks. Silly me. thumbs up smiley
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