What it means
A backwards E, the existential quantifier: at least one value makes what follows true. ∃! means there is exactly one.
Read aloud in real formulas
∃x ∈ ℝ : x² = 2
Aethel says
there exists x in the real numbers such that x squared equals 2
some real number squares to 2
Typing it
- LaTeX
- \exists
- Unicode
- U+2203
Questions
How do you say ∃ out loud?
It is usually read “there exists”, and also “there is”.
What does ∃ mean in maths?
A backwards E, the existential quantifier: at least one value makes what follows true. ∃! means there is exactly one.
How do you type ∃?
In LaTeX, write \exists. Its Unicode code point is U+2203.