There exists symbol (∃) in LaTeX

There exists symbol (∃)

Logic

∃

LaTeX command

\exists

there exists

Use inside math mode: $\exists$ — base LaTeX, KaTeX and MathJax

The existential quantifier. \exists! (with a literal exclamation mark) is the usual way to write 'there exists exactly one'. amssymb adds the negated \nexists.

All ways to write it

Command	Use	Package
`\exists`	there exists	none
`\nexists`	there does not exist, ∄	amssymb
`\exists!`	there exists a unique	none

Commands marked with a package need that \usepackage line in a LaTeX document.

Example

\exists!\, x \in \mathbb{R} : x^3 = 8

There is exactly one real cube root of 8.

Questions

How do I write 'there exists a unique'?

\exists! — the exclamation mark is just typed after the command.

Related symbols

For all ∀ \forall
Element of ∈ \in

Using there exists in Confluence

Confluence Cloud has no built-in LaTeX. With LaTeX Math for Confluence you add a math macro to any page, type \exists and it renders inline or as a block, with a live preview while you edit. Every command on this page renders there without extra packages.