Source: Noto Serif Tangut

U+FF1D Fullwidth Equals Sign

U+FF1D was added to Unicode in version 1.1 (1993). It belongs to the block U+FF00 to U+FFEF Halfwidth and Fullwidth Forms in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script.

The glyph is a Wide composition of the glyph Equals Sign. It has a Fullwidth East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+FF1D behaves as Ideographic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

The equals sign (British English, Unicode) or equal sign (American English), formerly known as the equality sign, is the mathematical symbol =, which is used to indicate equality in some well-defined sense. In an equation, it is placed between two expressions that have the same value, or for which one studies the conditions under which they have the same value.
In Unicode and ASCII, it has the code point U+003D. It was invented in 1557 by Robert Recorde.

Representations

System	Representation
Nº	65309
UTF-8	EF BC 9D
UTF-16	FF 1D
UTF-32	00 00 FF 1D
URL-Quoted	%EF%BC%9D
HTML hex reference	＝
Wrong windows-1252 Mojibake	ï¼
Encoding: EUC-KR (hex bytes)	A3 BD
Encoding: JIS0208 (hex bytes)	A1 E1
Adobe Glyph List	equalmonospace

Elsewhere

Complete Record

Property	Value
Age	1.1 (1993)
Unicode Name	FULLWIDTH EQUALS SIGN
Unicode 1 Name	—
Block	Halfwidth and Fullwidth Forms
General Category	Math Symbol
Script	Common
Bidirectional Category	Other Neutral
Combining Class	Not Reordered
Decomposition Type	Wide
Decomposition Mapping	Equals Sign
Lowercase	✘
Simple Lowercase Mapping	Fullwidth Equals Sign
Lowercase Mapping	Fullwidth Equals Sign
Uppercase	✘
Simple Uppercase Mapping	Fullwidth Equals Sign
Uppercase Mapping	Fullwidth Equals Sign
Simple Titlecase Mapping	Fullwidth Equals Sign
Titlecase Mapping	Fullwidth Equals Sign
Case Folding	Fullwidth Equals Sign
ASCII Hex Digit	✘
Alphabetic	✘
Bidi Control	✘
Bidi Mirrored	✘
Composition Exclusion	✘
Case Ignorable	✘
Changes When Casefolded	✘
Changes When Casemapped	✘
Changes When NFKC Casefolded	✔
Changes When Lowercased	✘
Changes When Titlecased	✘
Changes When Uppercased	✘
Cased	✘
Full Composition Exclusion	✘
Default Ignorable Code Point	✘
Dash	✘
Deprecated	✘
Diacritic	✘
Emoji Modifier Base	✘
Emoji Component	✘
Emoji Modifier	✘
Emoji Presentation	✘
Emoji	✘
Extender	✘
Extended Pictographic	✘
FC NFKC Closure	Fullwidth Equals Sign
Grapheme Cluster Break	Any
Grapheme Base	✔
Grapheme Extend	✘
Grapheme Link	✘
Hex Digit	✘
Hyphen	✘
ID Continue	✘
ID Start	✘
IDS Binary Operator	✘
IDS Trinary Operator and	✘
Ideographic	✘
Indic Mantra Category	—
Indic Positional Category	NA
Indic Syllabic Category	Other
Jamo Short Name	—
Join Control	✘
Logical Order Exception	✘
Math	✔
Noncharacter Code Point	✘
NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Casefold	Equals Sign
NFKC Quick Check	No
NFKD Quick Check	No
Other Alphabetic	✘
Other Default Ignorable Code Point	✘
Other Grapheme Extend	✘
Other ID Continue	✘
Other ID Start	✘
Other Lowercase	✘
Other Math	✘
Other Uppercase	✘
Prepended Concatenation Mark	✘
Pattern Syntax	✘
Pattern White Space	✘
Quotation Mark	✘
Regional Indicator	✘
Radical	✘
Sentence Break	Other
Soft Dotted	✘
Sentence Terminal	✘
Terminal Punctuation	✘
Unified Ideograph	✘
Variation Selector	✘
Word Break	Other
White Space	✘
XID Continue	✘
XID Start	✘
Expands On NFC	✘
Expands On NFD	✘
Expands On NFKC	✘
Expands On NFKD	✘
Bidi Paired Bracket	Fullwidth Equals Sign
Bidi Paired Bracket Type	None
East Asian Width	Fullwidth
Hangul Syllable Type	Not Applicable
ISO 10646 Comment	—
Joining Group	No_Joining_Group
Joining Type	Non Joining
Line Break	Ideographic
Numeric Type	None
Numeric Value	not a number
Simple Case Folding	Fullwidth Equals Sign
Script Extension
Vertical Orientation	R