Difference Equation: An equation that relates successive values of a sequence or discrete function, serving as the counterpart to differential equations in discrete time.

Differential-difference equation: An equation that combines differential operators with difference operators, often used to model systems exhibiting both continuous change and discrete shifts.

Mathematical equations, from the formulas of special and general relativity, to the Pythagorean theorem, are both powerful and pleasing in their beauty to many scientists. Here are experts ...

Some equations are beautiful because they reveal unexpected relationships between different subjects. The Loewner differential equation, introduced by Charles Loewner in 1923, describes the time ...