# sum of products expression

**sum of products expression ( SOP expression)** A Boolean function expressed as a sum of product terms, i.e. as an OR of AND terms containing uncomplemented or complemented variables. An example is

*f*= (

*x*∧

*y*′) ∨ (

*x*′ ∧

*z*)

The function is also realizable as the NAND of a group of NAND terms. See also standard sum of products, product of sums expression.

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The economic theory of production is derive… express , ex·press1 / ikˈspres/ • v. [tr.] 1. convey (a thought or feeling) in words or by gestures and conduct: he expressed complete satisfaction. ∎ (express… Expression , ex·pres·sion / ikˈspreshən/ • n. 1. the process of making known one's thoughts or feelings: she accepted his expressions of sympathy. ∎ the conveying… Equation , equation An expression that asserts the equality of two terms. To be precise, an equation has the following form. Let Σ be a signature and let t1(X1,… Coefficient , coefficient •abeyant, mayn't •ambient, circumambient •gradient, irradiant, radiant •expedient, ingredient, mediant, obedient •valiant • salient • res… Multiplication , multiplication
Multiplication
Multiplication is often described as repeated addition. For example, the product 3 × 4 is equal to the sum, 4 + 4 + 4,…

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