converse

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converse

1. Logic
a. a categorical proposition obtained from another by the transposition of subject and predicate, as no bad man is bald from no bald man is bad
b. a proposition so derived, possibly by weakening a universal proposition to the corresponding particular, as some socialists are rich from all rich men are socialists
2. Logic Maths a relation that holds between two relata only when a given relation holds between them in reverse order: thus father of is the converse of son of

converse

[′kän‚vərs]
(mathematics)
The converse of the statement “if p, then q ” is the statement “if q, then p.”

converse

(logic)
The truth of a proposition of the form A => B and its converse B => A are shown in the following truth table:

A B | A => B B => A ------+---------------- f f | t t f t | t f t f | f t t t | t t
References in classic literature ?
If you know the strange white man who saved our lives so many times, and brought us food, and if you can converse with him, thank him, also, for his kindness.
When I came to meet her, over a glass of the mild egg-nog which she served at her house on Sunday nights, and she told me about Heine, and how he looked, and some few things he said, I suffered an indescribable disappointment; and if I could have been frank with myself I should have owned to a fear that it might have been something like that, if I had myself met the poet in the flesh, and tried to hold the intimate converse with him that I held in the spirit.
Indeed I do; nor can I imagine any theme about which a man of sense would oftener wish to converse.
Thus did they converse, and presently Mercury came up to them with the ghosts of the suitors who had been killed by Ulysses.