To deny a proposition is to deny the conclusion of this proposition. (The negation of the proposition is contrary to the truth of the original proposition)

No proposition denies the conditions and conclusions of this proposition. (No proposition is not necessarily related to the authenticity of the original proposition)

For example:

If all three angles of a triangle are acute, then this triangle is an acute triangle. (correct)

Negative proposition: If all three angles of a triangle are acute, then the triangle is not an acute triangle. (error)

No proposition: if all three angles of a triangle are not acute, then the triangle is not acute. (correct)

The negation of a proposition is like a complement in a set relation. One is yes and the other is no.

Negative proposition is that conditions and conclusions are denied at the same time, and there is no specific relationship.

For example:

If a>0, then a>2. (False) (full name proposition, its negation is an existential proposition, and its negation is a full name proposition)

Denial of proposition: If a>0, then a>2 is not necessarily true. (correct)

There is no proposition: if one