# About NaN, 0/0 and false

**URL:** <https://discourse.julialang.org/t/about-nan-0-0-and-false/34272>\
**Category:** Numerics\
**Tags:** question\
**Created:** [February 6, 2020, 8:33pm UTC](https://discourse.julialang.org/t/about-nan-0-0-and-false/34272 "2020-02-06T20:33:51Z")\
**Posts on this page:** 1\
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**Author:** ![GunnarFarneback](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gunnarfarneback/32/1827_2.png) [@GunnarFarneback](https://discourse.julialang.org/u/GunnarFarneback)\
**Post date:** [February 6, 2020, 9:31pm UTC](https://discourse.julialang.org/t/about-nan-0-0-and-false/34272/3 "2020-02-06T21:31:14Z")

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Cf [Inconsistency of NaN](https://discourse.julialang.org/t/inconsistency-of-nan/28671).

Regarding false as strong zero, see Knuth’s writings at [[math/9205211] Two notes on notation](https://arxiv.org/abs/math/9205211).

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