
commutative 
in mathematics, interchangeable in order, as the terms in the equation, a + b = b + a. [1/2 definitions] 
differential equation 
an equation that contains differentials. 
indeterminate 
of a mathematical equation, not limited to one value for each unknown. [1/3 definitions] 
linear 
in mathematics, graphically represented as a straight line, as a function or an equation. [1/6 definitions] 
quadratic 
a quadratic equation. [1/2 definitions] 
quadratic equation 
in algebra, an equation in which the square is the highest power to which the unknown quantity is raised. 
soliton 
in physics, a solitary wave, or a solution to a type of equation that represents such a wave. 
theorem 
in algebra, a rule expressed as a mathematical equation or formula. [1/2 definitions] 
transpose 
to move (an algebraic term) from one side of an equation to another, thus reversing its sign. [1/4 definitions] 

