In the technical article Boolean Identies, I believe the definition of "complementarity" in the table is incorrect.

It shows that:

A + A' = A​

Which should be:

A + A' = 1​

Similarly for the And operation, it shows:

A . A' = A​

Which should be:

A . A' = 0

Here is the article.
http://www.allaboutcircuits.com/technical-articles/boolean-identities/​

 

Hello,

The article has gone life.
There is a forum section where the articles are discussed before going life.
There is a selected number of members who have access to theis forum section.

Bertus

PS I will post a link in the thread regarding the article.

 

Thanks, @djsfantasi , for pointing out the typo. It's been fixed.

Thanks, @bertus , for linking it.