Logically invalid statements.
An obverse statement is logically equivalent.
This would be logically equivalent to the conditional you started with.
This is not always true.
Not always. For example, X is equal to or less than 6 is not the same as X is equivalent to 6.
Logically invalid statements.
A Contrapositive statement is logically equivalent.
An obverse statement is logically equivalent.
syllogism
The statement "If not q, then not p" is logically equivalent to "If p, then q."
A conclusion logically follows from other statements when it is a necessary inference based on the information provided. In logical reasoning, a conclusion is reached by applying valid reasoning rules to the given premises. If the conclusion can be drawn directly from the premises using these rules, it is said to follow logically.
No.
If an algebraic expression is equivalent to another algebraic expression then it is an equation.
Contrapositive
a conditional and its contrapositive
This is not always true.
This would be logically equivalent to the conditional you started with.