In addition to boolean T-F, they have an "undetermined" or "null" value N(adsbygoogle = window.adsbygoogle || []).push({});

The truth table in the book for this logic goes like this:

"OR"

T v N = T

F v N = N

"AND"

T ^ N = N

F ^ N = F

it does not make sence unless I assume N to be unknown in a sense of unknown whether N = T or F, i.e. N = (T v F).

If N is considered to be a null it does not make sense at all! Is my assumption correct? or if not, could someone shed clarity on this

Thanks.

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# Homework Help: Three-valued logic

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