Fuente: Noto Sans Math

U+221D Proportional To

U+221D was added in Unicode version 1.1 in 1993. It belongs to the block U+2200 para U+22FF Mathematical Operators in the U+0000 para U+FFFF Basic Multilingual Plane.

This character is a Puntuación matemática and is commonly used, that is, in no specific script.

The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored. If its East Asian Width is “narrow”, U+221D forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts.

The CLDR project calls this character “proporcional” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: proporcionalidad.

El Wikipedia tiene la siguiente información acerca de este punto de código:

La proporcionalidad es una relación o razón constante entre diferentes magnitudes que se vayan a medir.

Representaciones

Sistema	Representación
N.º	8733
UTF-8	E2 88 9D
UTF-16	22 1D
UTF-32	00 00 22 1D
URL-Quoted	%E2%88%9D
HTML hex reference	∝
Mojibake mal de windows-1252	âˆ
HTML named entity	&Proportional;
HTML named entity	&prop;
HTML named entity	&propto;
HTML named entity	&varpropto;
HTML named entity	&vprop;
Codificación: EUC-KR (hexadecimales bytes)	A1 F0
Codificación: JIS0208 (hexadecimales bytes)	A2 E7
L^AT_EX	\propto
Adobe Glyph List	proportional
dígrafo	0(

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Registro completo

Propiedad	Valor
Antigüedad (age)	1.1 (1993)
Nombre Unicode (na)	PROPORTIONAL TO
Nombre Unicode 1 (na1)	—
Block (blk)	Mathematical Operators
Categoría general (gc)	Puntuación matemática
Script (sc)	Common
Categoría de bidireccionalidad (bc)	Other Neutral
Combining Class (ccc)	Not Reordered
Tipo de descomposición (dt)	none
Decomposition Mapping (dm)	Proportional To
Minúscula (Lower)	✘
Simple Lowercase Mapping (slc)	Proportional To
Lowercase Mapping (lc)	Proportional To
Mayúscula (Upper)	✘
Simple Uppercase Mapping (suc)	Proportional To
Uppercase Mapping (uc)	Proportional To
Simple Titlecase Mapping (stc)	Proportional To
Titlecase Mapping (tc)	Proportional To
Case Folding (cf)	Proportional To
ASCII Hex Digit (AHex)	✘
Alphabetic (Alpha)	✘
Bidi Control (Bidi_C)	✘
Bidi Mirrored (Bidi_M)	✔
Exclusión de descomposición (CE)	✘
Case Ignorable (CI)	✘
Changes When Casefolded (CWCF)	✘
Changes When Casemapped (CWCM)	✘
Changes When NFKC Casefolded (CWKCF)	✘
Changes When Lowercased (CWL)	✘
Changes When Titlecased (CWT)	✘
Changes When Uppercased (CWU)	✘
Cased (Cased)	✘
Exclusión de composición completa (Comp_Ex)	✘
Default Ignorable Code Point (DI)	✘
Raya (Dash)	✘
Deprecated (Dep)	✘
Diacrítico (Dia)	✘
Base de modificador de emoyi (EBase)	✘
Componente de emoyi (EComp)	✘
Modificador de emoyi (EMod)	✘
Presentación de emoyi (EPres)	✘
Emoyi (Emoji)	✘
Extender (Ext)	✘
Extended Pictographic (ExtPict)	✘
FC NFKC Closure (FC_NFKC)	Proportional To
Grapheme Cluster Break (GCB)	Any
Base de grafema (Gr_Base)	✔
Extensión de grafema (Gr_Ext)	✘
Enlace de grafema (Gr_Link)	✘
Hex Digit (Hex)	✘
Guion (Hyphen)	✘
ID Continue (IDC)	✘
ID Start (IDS)	✘
IDS Binary Operator (IDSB)	✘
IDS Trinary Operator and (IDST)	✘
IDSU (IDSU)	0
ID_Compat_Math_Continue (ID_Compat_Math_Continue)	0
ID_Compat_Math_Start (ID_Compat_Math_Start)	0
Ideographic (Ideo)	✘
InCB (InCB)	None
Indic Mantra Category (InMC)	—
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Other
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘
Logical Order Exception (LOE)	✘
Math (Math)	✔
Noncharacter Code Point (NChar)	✘
NFC Quick Check (NFC_QC)	Sí
NFD Quick Check (NFD_QC)	Sí
NFKC Casefold (NFKC_CF)	Proportional To
NFKC Quick Check (NFKC_QC)	Sí
NFKC_SCF (NFKC_SCF)	Proportional To
NFKD Quick Check (NFKD_QC)	Sí
Other Alphabetic (OAlpha)	✘
Other Default Ignorable Code Point (ODI)	✘
Otra extensión de grafema (OGr_Ext)	✘
Other ID Continue (OIDC)	✘
Other ID Start (OIDS)	✘
Other Lowercase (OLower)	✘
Other Math (OMath)	✘
Other Uppercase (OUpper)	✘
Prepended Concatenation Mark (PCM)	✘
Pattern Syntax (Pat_Syn)	✔
Pattern White Space (Pat_WS)	✘
Comilla (QMark)	✘
Indicador regional (RI)	✘
Radical (Radical)	✘
Salto de oración (SB)	Other
Soft Dotted (SD)	✘
Sentence Terminal (STerm)	✘
Terminal Punctuation (Term)	✘
Ideograma unificado (UIdeo)	✘
Selector de variación (VS)	✘
Salto de palabra (WB)	Other
Espacio en blanco (WSpace)	✘
XID Continue (XIDC)	✘
XID Start (XIDS)	✘
Expands On NFC (XO_NFC)	✘
Expands On NFD (XO_NFD)	✘
Expands On NFKC (XO_NFKC)	✘
Expands On NFKD (XO_NFKD)	✘
Bidi Paired Bracket (bpb)	Proportional To
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	ambiguous
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Ambiguous (Alphabetic or Ideographic)
Numeric Type (nt)	none
Valor numérico (nv)	not a number
Simple Case Folding (scf)	Proportional To
Script Extension (scx)
Orientación vertical (vo)	R