Non-P means negative conditions and conclusions, and no proposition means negative conclusions, keeping the conditions unchanged.

For example, if a delta is a right angle delta, then a? +b？ =c？

Non-p, if a δ is not a right angle δ, then a? +b？ Not equal to c? .

There is no proposition, if a δ is a right angle δ, then a? +b？ Not equal to c?