Biconditional Introduction/Proof Rule/Technical Note
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Technical Note on Biconditional Introduction
When invoking Biconditional Introduction in a tableau proof, use the {{BiconditionalIntro}}
template:
{{BiconditionalIntro|line|pool|statement|first|second}}
or:
{{BiconditionalIntro|line|pool|statement|first|second|comment}}
where:
line
is the number of the line on the tableau proof where Biconditional Introduction is to be invokedpool
is the combined pool of assumptions of each of the constituents (comma-separated list)statement
is the statement of logic that is to be displayed in the Formula column, without the$ ... $
delimitersfirst
is the first of the two lines of the tableau proof upon which this line directly dependssecond
is the second of the two lines of the tableau proof upon which this line directly dependscomment
is the (optional) comment that is to be displayed in the Notes column.