Analytic functions, defined by the property of being locally expressible as convergent power series, form a cornerstone of complex analysis. Differential operators, which act on these functions by ...

Heun functions, which generalise the well‐known hypergeometric functions, are solutions to the Heun differential equation – a second‐order linear differential equation with four regular ...

The RS-422 specification requires certain differential line receivers to be able to detect small differential voltages over a broad common-mode range. Within the recommended ...

Proportional-integral-derivative (PID) is the most common industrial technology for closed-loop control.

Motivated essentially by several recent works on interesting generalizations of the first-order Volterra-type integro-differential equation governing the unsaturated behavior of the free electron ...

Mathematics Magazine presents articles and notes on undergraduate mathematical topics in a lively expository style that appeals to students and faculty throughout the undergraduate years. The journal ...

A simple extension of a previous class A/B differential output amp DI that creates a square-law characteristic.