Question

Convert the following formula to conjunctive normal form (clause form). a)

a ≡ (b ≡ c)

is the answer
(a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a)

unsure thanks

Answer 1

(b ≡ c) mean ( b כ c) ^ (c כ b)

But if a,b,c are sets, then (b ≡ c) is either T or F. You cannot then say

a כ T

So, I guess a,b,c are all T/F values, and using subset notation does not seem correct.

Maybe I misunderstand your ≡ operator.

Answer 2

you did not misunderstand the ≡ operator

Answer 3

my problem has nothing to do with assigning truth values though I have to rewrite it in conductive normal form

Answer 4

ah. Then does b כ c mean implies? If so, then your initial expression appears correct.

Sorry, but I don't know the conductive normal form. Surely google can help with this.