equation

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Related to equational: recanalize, equational logic, premenarchal

equation

a means of portraying arithmetically the relationship between VARIABLES. For example, the equation: C = 1,000 + 0.9Y suggests a particular relationship between consumer expenditure (C) and disposable income (Y), which would be true for certain values of C and Y (such as 10,000 and 10,000 respectively) but not true of other values of C and Y (such as 6,000 and 10,000 respectively). Equations are generally written with a two-bar equals sign (=), with the value to the left of the sign being equal to the value to the right of the sign. The validity of an equation can be tested statistically by collecting paired observations of the variables involved and testing whether or not these observations conform with the equation formulated. See IDENTITY.
References in periodicals archive ?
The PS in 2011 were higher, and the equational adjustment was by y = [ax.sup.n] with [R.sup.2] equal to 60% in SHB 80 (Figure 3c), and in SHB 140 by y = [e.sup.bx] with [R.sup.2] less than and equal to 46% (Figure 3d).
the biclausal construction in which the wh-element forms the predicate in a subject-predicate equational sentence.
Maude is a high level, very powerful, declarative language for the construction of the various kinds of applications based on both equational and rewriting logics.
In the case of Maude, the underlying equational theory is Membership Equational Logic , which in addition to equations allows the user to define membership axioms stating the members of a sort.
As shown in (9, 10) equational relationship between stresses and instability probability is unlinear.
We prove the following theorem announced by Zhil'tsov in 2000: the equational theory of the class of all epigroups coincides with the equational theory of the class of all finite epigroups and is decidable.
After reviewing the modern research into logical systems--such as equational logics--devoid of the apparatus of propositional connectives, this paper notes the emergence of natural-deduction systems devoid of the apparatus of axiomatization.
The formulas are written in a scripting language similar to Latex, which is later translated and displayed in visual equational form.
segregation, called random chromatid segregation and maximum equational
Schmidt, On n-permutable equational classes, Acta Sci.
Cattaneo and Ciucci  focus on the study on lattices with interior and closure operators and abstract approximation spaces, in which the nonequational notion of abstract approximation space for roughness theory is introduced, and its relationship with the equational definition of lattice with Tarski interior and closure operations is studied.

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