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In mathematics, a set of simultaneous equations, also known as a system of equations or an equation system, is a
finite set In mathematics, particularly set theory, a finite set is a set that has a finite number of elements. Informally, a finite set is a set which one could in principle count and finish counting. For example, :\ is a finite set with five elements. ...
of equations for which common solutions are sought. An equation system is usually classified in the same manner as single equations, namely as a: * System of linear equations, * System of nonlinear equations, * System of bilinear equations, *
System of polynomial equations A system of polynomial equations (sometimes simply a polynomial system) is a set of simultaneous equations where the are polynomials in several variables, say , over some field . A ''solution'' of a polynomial system is a set of values for the ...
, * System of differential equations, or a * System of difference equations


See also

* Simultaneous equations model, a statistical model in the form of simultaneous linear equations *
Elementary algebra Elementary algebra encompasses the basic concepts of algebra. It is often contrasted with arithmetic: arithmetic deals with specified numbers, whilst algebra introduces variables (quantities without fixed values). This use of variables enta ...
, for elementary methods {{set index article Equations Broad-concept articles de:Gleichung#Gleichungssysteme