This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+27D9 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
The tee (⊤, op in LaTeX), also called down tack (as opposed to the up tack) or verum, is a symbol used to represent:
The top element in lattice theory.
The truth value of being true in logic, or a sentence (e.g., formula in propositional calculus) which is unconditionally true. By definition, every tautology is logically equivalent to the verum.
The top type in type theory.
Mixed radix encoding in the APL programming language.
A lowered phonic in the International Phonetic Alphabet and phonetics. In this usage, it is usually written under the primary IPA symbol.
A similar-looking superscript T may be used to mean the transpose of a matrix.
Representations
System
Representation (click value to copy)
Nº
10201
UTF-8
E2 9F 99
UTF-16
27 D9
UTF-32
00 00 27 D9
URL-Quoted
%E2%9F%99
HTML hex reference
⟙
Wrong windows-1252 Mojibake
⟙
Encoding: GB18030 (hex bytes)
81 37 D1 35
RFC 5137
\u'27D9'
Bash and Zsh inside echo -e
\u27D9
C and C++
\u27D9
C#
\u27D9
CSS
\0027D9
Excel
=UNICHAR(10201)
Go
\u27D9
JavaScript
\u27D9
Modern JavaScript since ES6
\u{27d9}
JSON
\u27D9
Java
\u27D9
Lua
\u{27D9}
Matlab
char(10201)
Perl
"\x{27D9}"
PHP
\u{27d9}
PostgreSQL
U&'\27D9'
PowerShell
`u{27D9}
Python
\u27D9
Ruby
\u{27d9}
Rust
\u{27d9}
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