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# almost everywhere

A condition is said to hold almost everywhere on a measurable set $$X$$ if the subset $$N$$ of elements of $$X$$ on which the condition does not hold has measure zero, i.e., if $$N$$ is a null set.

Citation Info

• [MLA] “almost everywhere.” Platonic Realms Interactive Mathematics Encyclopedia. Platonic Realms, 21 Feb 2013. Web. 21 Feb 2013. <http://platonicrealms.com/>
• [APA] almost everywhere (21 Feb 2013). Retrieved 21 Feb 2013 from the Platonic Realms Interactive Mathematics Encyclopedia: http://platonicrealms.com/encyclopedia/almost-everywhere/