boolean - Algorithm for finding a formula that connects inputs and outputs -

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i seem recall having learned method finding formula connects inputs , outputs table. example:

a b c | r 1 1 0 | 0 0 1 1 | 1 1 1 1 | 1

where "r" result, , a, b , c inputs. method involved equations many unknowns , ended formula explained all. (this example not meaningful, since r = c, idea).

however, can not remember details, , not enough keywords able find on web. subject teaching method included lot of boolean algebra.

i know vague question, method finding formula table of values be?

are referring karnaugh maps?


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