complex variable

American  

noun

Mathematics.

1. a variable to which complex numbers may be assigned as value.

---

Etymology

Origin of complex variable

First recorded in 1875–80

Example Sentences

The variation in healthy hearts produced a very complex, variable melody line.

From Newsweek

Consider the polynomial z2, where is the complex variable x+iy.

From Scientific American

Of this enormously powerful relation, a more lately discovered result, which is very fundamental in the theory of functions of a complex variable, and which is generally quoted as Riemann's theorem, is only a particular case.

From Project Gutenberg

It will be seen that as each successive aspect of geographical science is considered in its natural sequence the conditions become 638 Conclusion. more numerous, complex, variable and practically important.

From Project Gutenberg

If the terms depend upon a complex variable z, the convergence is called uniform for a range of values of z, when the inequality holds, for the same ε and m, for all the points z of this range.

From Project Gutenberg