There Exists
U+2203 · decimal 8707 · Mathematical Operators
Every way to write it
7 forms∃
A named entity — readable, and safe in any HTML document without declaring a charset.
∃
The numeric form works everywhere a named one does, and exists for every character.
\2203
For a content property in a ::before or ::after rule. No semicolon, and mind the trailing space.
\u2203
Valid in a JavaScript or JSON string literal, so it survives files and pipelines that are not UTF-8 clean.
\u2203
The escape for a Python string literal.
%E2%88%83
Percent-encoded UTF-8, for a query string or a path segment.
E2 88 83
3 bytes on the wire. Seeing these as separate garbled characters means something decoded them as single-byte text.
Typing it without copying
system pickerControl + Command + Space, then search there exists
Character Map or Alt + 8707