Home U+0400 to U+04FF Cyrillic
Glyph for U+0451
Source: Noto Sans

U+0451 Cyrillic Small Letter Io

U+0451 was added to Unicode in version 1.1 (1993). It belongs to the block U+0400 to U+04FF Cyrillic in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Lowercase Letter and is mainly used in the Cyrillic script. It is related to its uppercase variant Glyph for U+0401 Cyrillic Capital Letter Io and its titlecase variant Glyph for U+0401 Cyrillic Capital Letter Io.

The glyph is a Canonical composition of the glyphs Glyph for U+0435 Cyrillic Small Letter Ie, Glyph for U+0308 Combining Diaeresis. It has a Ambiguous East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+0451 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Yo, Jo, or Io (Ё ё; italics: Ё ё; Russian pronunciation: [jɵ]) is a letter of the Cyrillic script. In Unicode, the letter ⟨Ё⟩ is named CYRILLIC CAPITAL/SMALL LETTER IO.

In English, the letter Yo is romanized using the Latin ë (according to the ALA–LC and British Standards), ë ( word-initially) (BGN/PCGN) or yo/jo (orthographic transcription) for Russian, and as i͡o (ALA–LC), yo (BGN/PCGN), or ë (BSI) for Belarusian. In international systems, Yo is romanized as ë (ISO 9).

It was derived from the Cyrillic letter Ye (Е е).

Representations

System Representation
1105
UTF-8 D1 91
UTF-16 04 51
UTF-32 00 00 04 51
URL-Quoted %D1%91
HTML-Escape ё
Wrong windows-1252 Mojibake ё
HTML-Escape ё
Encoding: EUC-KR (hex bytes) AC D7
Encoding: IBM866 (hex bytes) F1
Encoding: ISO-8859-5 (hex bytes) F1
Encoding: JIS0208 (hex bytes) A7 D7
Encoding: KOI8-R (hex bytes) A3
Encoding: KOI8-U (hex bytes) A3
Encoding: WINDOWS-1251 (hex bytes) B8
Encoding: X-MAC-CYRILLIC (hex bytes) DE
LATEX \cyrchar\cyryo
Adobe Glyph List afii10071
Adobe Glyph List iocyrillic
digraph io

Related Characters

Elsewhere

Complete Record

Property Value
Age 1.1 (1993)
Unicode Name CYRILLIC SMALL LETTER IO
Unicode 1 Name
Block Cyrillic
General Category Lowercase Letter
Script Cyrillic
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type Canonical
Decomposition Mapping Glyph for U+0435 Cyrillic Small Letter Ie Glyph for U+0308 Combining Diaeresis
Lowercase
Simple Lowercase Mapping Glyph for U+0451 Cyrillic Small Letter Io
Lowercase Mapping Glyph for U+0451 Cyrillic Small Letter Io
Uppercase
Simple Uppercase Mapping Glyph for U+0401 Cyrillic Capital Letter Io
Uppercase Mapping Glyph for U+0401 Cyrillic Capital Letter Io
Simple Titlecase Mapping Glyph for U+0401 Cyrillic Capital Letter Io
Titlecase Mapping Glyph for U+0401 Cyrillic Capital Letter Io
Case Folding Glyph for U+0451 Cyrillic Small Letter Io
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 Glyph for U+0451 Cyrillic Small Letter Io
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 No
NFKC Casefold Glyph for U+0451 Cyrillic Small Letter Io
NFKC Quick Check Yes
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 Lower
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Alphabetic Letter
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Paired Bracket Glyph for U+0451 Cyrillic Small Letter Io
Bidi Paired Bracket Type None
East Asian Width Ambiguous
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Alphabetic
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+0451 Cyrillic Small Letter Io
Script Extension
Vertical Orientation R