Monad (nonstandard analysis)

In nonstandard analysis, a monad or also a halo is the set of points infinitesimally close to a given point.

[1][2] Given a hyperreal number x in R∗, the monad of x is the set If x is finite (limited), the unique real number in the monad of x is called the standard part of x.

[3]

This mathematical analysis–related article is a stub.

You can help Wikipedia by expanding it.