Noun
A making equal; equal division; equality; equilibrium.
An expression of the condition of equality between two algebraic quantities or sets of quantities, the sign = being placed between them; as, a binomial equation; a quadratic equation; an algebraic equation; a transcendental equation; an exponential equation; a logarithmic equation; a differential equation, etc.
A quantity to be applied in computing the mean place or other element of a celestial body; that is, any one of the several quantities to be added to, or taken from, its position as calculated on the hypothesis of a mean uniform motion, in order to find its true position as resulting from its actual and unequal motion.
Source: Webster's dictionaryScience is a differential equation. Religion is a boundary condition. Alan Turing
Today's scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality. Nikola Tesla
Equations are more important to me, because politics is for the present, but an equation is something for eternity. Albert Einstein
The equation of religion with belief is rather recent. Arnold J. Toynbee
Yes, we have to divide up our time like that, between our politics and our equations. But to me our equations are far more important, for politics are only a matter of present concern. A mathematical equation stands forever. Albert Einstein
I have learned the junk equation. Junk is not, like alcohol or weed, a means to increased enjoyment of life. Junk is not a kick. It is a way of life. William S. Burroughs