The glyph is a compatibility version of the glyph Glyph for U+03B8Greek Small Letter Theta. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+03D1 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:
Theta (UK: , US: ) uppercase Θ or ϴ; lowercase θ or ϑ; Ancient Greek: θῆταthē̂ta[tʰɛ̂ːta]; Modern: θήταthī́ta[ˈθita]) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth . In the system of Greek numerals, it has a value of 9.
Representations
System
Representation (click value to copy)
Nº
977
UTF-8
CF 91
UTF-16
03 D1
UTF-32
00 00 03 D1
URL-Quoted
%CF%91
HTML hex reference
ϑ
Wrong windows-1252 Mojibake
Ï‘
HTML named entity
ϑ
HTML named entity
ϑ
HTML named entity
ϑ
alias
script theta
Encoding: GB18030 (hex bytes)
81 30 CC 37
LATEX
\textvartheta
Adobe Glyph List
theta1
Adobe Glyph List
thetasymbolgreek
RFC 5137
\u'03D1'
Bash and Zsh inside echo -e
\u03D1
C and C++
\u03D1
C#
\u03D1
CSS
\0003D1
Excel
=UNICHAR(977)
Go
\u03D1
JavaScript
\u03D1
Modern JavaScript since ES6
\u{3d1}
JSON
\u03D1
Java
\u03D1
Lua
\u{3D1}
Matlab
char(977)
Perl
"\x{3D1}"
PHP
\u{3d1}
PostgreSQL
U&'\03D1'
PowerShell
`u{3D1}
Python
\u03D1
Ruby
\u{3d1}
Rust
\u{3d1}
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