Inicio: go to the homepage U+27F0 para U+27FF Supplemental Arrows-A
Glifo para U+27FA
Fuente: Noto Sans Math

U+27FA Long Left Right Double Arrow

U+27FA was added in Unicode version 3.2 in 2002. It belongs to the block U+27F0 para U+27FF Supplemental Arrows-A 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. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+27FA forms with similar adjacent characters prevents a line break inside it.

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

In logic and related fields such as mathematics and philosophy, "if and only if" (often shortened as "iff") is paraphrased by the biconditional, a logical connective between statements. The biconditional is true in two cases, where either both statements are true or both are false. The connective is biconditional (a statement of material equivalence), and can be likened to the standard material conditional ("only if", equal to "if ... then") combined with its reverse ("if"); hence the name. The result is that the truth of either one of the connected statements requires the truth of the other (i.e. either both statements are true, or both are false), though it is controversial whether the connective thus defined is properly rendered by the English "if and only if"—with its pre-existing meaning. For example, P if and only if Q means that P is true whenever Q is true, and the only case in which P is true is if Q is also true, whereas in the case of P if Q, there could be other scenarios where P is true and Q is false.

In writing, phrases commonly used as alternatives to P "if and only if" Q include: Q is necessary and sufficient for P, for P it is necessary and sufficient that Q, P is equivalent (or materially equivalent) to Q (compare with material implication), P precisely if Q, P precisely (or exactly) when Q, P exactly in case Q, and P just in case Q. Some authors regard "iff" as unsuitable in formal writing; others consider it a "borderline case" and tolerate its use. In logical formulae, logical symbols, such as and , are used instead of these phrases; see § Notation below.

Representaciones

Sistema Representación
N.º 10234
UTF-8 E2 9F BA
UTF-16 27 FA
UTF-32 00 00 27 FA
URL-Quoted %E2%9F%BA
HTML hex reference ⟺
Mojibake mal de windows-1252 ⟺
HTML named entity ⟺
HTML named entity ⟺
HTML named entity ⟺
Codificación: GB18030 (hexadecimales bytes) 81 37 D4 38
LATEX \Longleftrightarrow

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Registro completo

Propiedad Valor
Antigüedad (age) 3.2 (2002)
Nombre Unicode (na) LONG LEFT RIGHT DOUBLE ARROW
Nombre Unicode 1 (na1)
Block (blk) Superscripts and Subscripts
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) Glifo para U+27FA Long Left Right Double Arrow
Minúscula (Lower)
Simple Lowercase Mapping (slc) Glifo para U+27FA Long Left Right Double Arrow
Lowercase Mapping (lc) Glifo para U+27FA Long Left Right Double Arrow
Mayúscula (Upper)
Simple Uppercase Mapping (suc) Glifo para U+27FA Long Left Right Double Arrow
Uppercase Mapping (uc) Glifo para U+27FA Long Left Right Double Arrow
Simple Titlecase Mapping (stc) Glifo para U+27FA Long Left Right Double Arrow
Titlecase Mapping (tc) Glifo para U+27FA Long Left Right Double Arrow
Case Folding (cf) Glifo para U+27FA Long Left Right Double Arrow
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) Glifo para U+27FA Long Left Right Double Arrow
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)
Modifier Combining Mark (MCM)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC)
NFD Quick Check (NFD_QC)
NFKC Casefold (NFKC_CF) Glifo para U+27FA Long Left Right Double Arrow
NFKC Quick Check (NFKC_QC)
NFKC_SCF (NFKC_SCF) Glifo para U+27FA Long Left Right Double Arrow
NFKD Quick Check (NFKD_QC)
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) Glifo para U+27FA Long Left Right Double Arrow
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) neutral
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Alphabetic
Numeric Type (nt) none
Valor numérico (nv) not a number
Simple Case Folding (scf) Glifo para U+27FA Long Left Right Double Arrow
Script Extension (scx)
Orientación vertical (vo) R