= Biconditional introduction
{wiki=Biconditional_introduction}
Biconditional introduction is a rule of inference in formal logic that allows one to conclude a biconditional statement from two conditional statements. In other words, if you can show that one statement implies another and vice versa, you can introduce a biconditional statement that combines both implications. Formally, the rule can be stated as follows: if you have proven both of the following: 1. \\( A \\rightarrow B \\) (If A, then B) 2.
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