Home U+2A00 to U+2AFF Supplemental Mathematical Operators
Glyph for U+2A1B
Source: Noto Sans Math

U+2A1B INTEGRAL WITH OVERBAR

U+2A1B was added to Unicode in version 3.2 (2002). It belongs to the block U+2A00 to U+2AFF Supplemental Mathematical Operators 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 character is also known as upper integral.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is mirrored. In text U+2A1B behaves as Alphabetic 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:

In the branch of mathematics known as real analysis, the Darboux integral is constructed using Darboux sums and is one possible definition of the integral of a function. Darboux integrals are equivalent to Riemann integrals, meaning that a function is Darboux-integrable if and only if it is Riemann-integrable, and the values of the two integrals, if they exist, are equal. The definition of the Darboux integral has the advantage of being easier to apply in computations or proofs than that of the Riemann integral. Consequently, introductory textbooks on calculus and real analysis often develop Riemann integration using the Darboux integral, rather than the true Riemann integral. Moreover, the definition is readily extended to defining Riemann–Stieltjes integration. Darboux integrals are named after their inventor, Gaston Darboux (1842–1917).

Representations

System Representation
10779
UTF-8 E2 A8 9B
UTF-16 2A 1B
UTF-32 00 00 2A 1B
URL-Quoted %E2%A8%9B
HTML-Escape ⨛
Wrong windows-1252 Mojibake ⨛
alias upper integral

Elsewhere

Complete Record

Property Value
Age 3.2 (2002)
Unicode Name INTEGRAL WITH OVERBAR
Unicode 1 Name
Block Supplemental Arrows-C
General Category Math Symbol
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+2A1B Integral with Overbar
Lowercase
Simple Lowercase Mapping Glyph for U+2A1B Integral with Overbar
Lowercase Mapping Glyph for U+2A1B Integral with Overbar
Uppercase
Simple Uppercase Mapping Glyph for U+2A1B Integral with Overbar
Uppercase Mapping Glyph for U+2A1B Integral with Overbar
Simple Titlecase Mapping Glyph for U+2A1B Integral with Overbar
Titlecase Mapping Glyph for U+2A1B Integral with Overbar
Case Folding Glyph for U+2A1B Integral with Overbar
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Bidi Paired Bracket Glyph for U+2A1B Integral with Overbar
Bidi Paired Bracket Type None
Cased
Composition Exclusion
Case Ignorable
Full Composition Exclusion
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Dash
Deprecated
Default Ignorable Code Point
Diacritic
East Asian Width Neutral
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji
Emoji Presentation
Extender
Extended Pictographic
FC NFKC Closure Glyph for U+2A1B Integral with Overbar
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hangul Syllable Type Not Applicable
Hyphen
ID Continue
Ideographic
ID Start
IDS Binary Operator
IDS Trinary Operator and
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
ISO 10646 Comment
Joining Group No_Joining_Group
Join Control
Jamo Short Name
Joining Type Non Joining
Line Break Alphabetic
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+2A1B Integral with Overbar
NFKC Quick Check Yes
NFKD Quick Check Yes
Numeric Type None
Numeric Value not a number
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Pattern Syntax
Pattern White Space
Prepended Concatenation Mark
Quotation Mark
Radical
Regional Indicator
Sentence Break Other
Simple Case Folding Glyph for U+2A1B Integral with Overbar
Script Extension
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Vertical Orientation R
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD