Biconditional Introduction/Proof Rule/Technical Note

Technical Note
When invoking Biconditional Introduction in a tableau proof, use the BiconditionalIntro template:



or:

where:
 * is the number of the line on the tableau proof where Biconditional Introduction is to be invoked
 * is the combined pool of assumptions of each of the constituents (comma-separated list)
 * is the statement of logic that is to be displayed in the Formula column, without the  delimiters
 * is the first of the two lines of the tableau proof upon which this line directly depends
 * is the second of the two lines of the tableau proof upon which this line directly depends
 * is the (optional) comment that is to be displayed in the Notes column.