U+215F was added to Unicode in version 1.1 (1993). It belongs to the block Number Forms in the Basic Multilingual Plane.

This character is a Other Number and is commonly used, that is, in no specific script. The codepoint has the Numeric value 1.

The glyph is a Fraction composition of the glyphs . It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+215F 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 mathematics, a

multiplicative inverseorreciprocalfor a numberx, denoted by 1/xorx^{−1}, is a number which when multiplied byxyields the multiplicative identity, 1. The multiplicative inverse of a fractiona/bisb/a. For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4. Thereciprocal function, the functionf(x) that mapsxto 1/x, is one of the simplest examples of a function which is its own inverse (an involution).The term

reciprocalwas in common use at least as far back as the third edition ofEncyclopædia Britannica(1797) to describe two numbers whose product is 1; geometrical quantities in inverse proportion are described asreciprocallin a 1570 translation of Euclid'sElements.In the phrase

multiplicative inverse, the qualifiermultiplicativeis often omitted and then tacitly understood (in contrast to the additive inverse). Multiplicative inverses can be defined over many mathematical domains as well as numbers. In these cases it can happen thatab≠ba; then "inverse" typically implies that an element is both a left and right inverse.The notation

f^{−1}is sometimes also used for the inverse function of the functionf, which is not in general equal to the multiplicative inverse. For example, the multiplicative inverse 1/(sinx) = (sinx)^{−1}is different from the inverse sin ofx, denoted sin^{−1}xor arcsinx. Only for linear maps are they strongly related (see below). The terminology differencereciprocalversusinverseis not sufficient to make this distinction, since many authors prefer the opposite naming convention, probably for historical reasons (for example in French, the inverse function is preferably called application réciproque).

System | Representation |
---|---|

Nº | 8543 |

UTF-8 | E2 85 9F |

UTF-16 | 21 5F |

UTF-32 | 00 00 21 5F |

URL-Quoted | %E2%85%9F |

HTML-Escape | ⅟ |

Wrong windows-1252 Mojibake | â |

Property | Value |
---|---|

Age (age) | 1.1 |

Unicode Name (na) | FRACTION NUMERATOR ONE |

Unicode 1 Name (na1) | — |

Block (blk) | Number_Forms |

General Category (gc) | Other Number |

Script (sc) | Common |

Bidirectional Category (bc) | Other Neutral |

Combining Class (ccc) | Not Reordered |

Decomposition Type (dt) | Fraction |

Decomposition Mapping (dm) | |

Lowercase (Lower) | ✘ |

Simple Lowercase Mapping (slc) | |

Lowercase Mapping (lc) | |

Uppercase (Upper) | ✘ |

Simple Uppercase Mapping (suc) | |

Uppercase Mapping (uc) | |

Simple Titlecase Mapping (stc) | |

Titlecase Mapping (tc) | |

Case Folding (cf) | |

ASCII Hex Digit (AHex) | ✘ |

Alphabetic (Alpha) | ✘ |

Bidi Control (Bidi_C) | ✘ |

Bidi Mirrored (Bidi_M) | ✘ |

Bidi Paired Bracket (bpb) | |

Bidi Paired Bracket Type (bpt) | None |

Cased (Cased) | ✘ |

Composition Exclusion (CE) | ✘ |

Case Ignorable (CI) | ✘ |

Full Composition Exclusion (Comp_Ex) | ✘ |

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) | ✘ |

Dash (Dash) | ✘ |

Deprecated (Dep) | ✘ |

Default Ignorable Code Point (DI) | ✘ |

Diacritic (Dia) | ✘ |

East Asian Width (ea) | Neutral |

Extender (Ext) | ✘ |

FC NFKC Closure (FC_NFKC) | |

Grapheme Cluster Break (GCB) | Any |

Grapheme Base (Gr_Base) | ✔ |

Grapheme Extend (Gr_Ext) | ✘ |

Grapheme Link (Gr_Link) | ✘ |

Hex Digit (Hex) | ✘ |

Hangul Syllable Type (hst) | Not Applicable |

Hyphen (Hyphen) | ✘ |

ID Continue (IDC) | ✘ |

Ideographic (Ideo) | ✘ |

ID Start (IDS) | ✘ |

IDS Binary Operator (IDSB) | ✘ |

IDS Trinary Operator and (IDST) | ✘ |

InMC (InMC) | — |

Indic Positional Category (InPC) | NA |

Indic Syllabic Category (InSC) | Other |

ISO 10646 Comment (isc) | — |

Joining Group (jg) | No_Joining_Group |

Join Control (Join_C) | ✘ |

Jamo Short Name (JSN) | — |

Joining Type (jt) | Non Joining |

Line Break (lb) | Alphabetic |

Logical Order Exception (LOE) | ✘ |

Math (Math) | ✘ |

Noncharacter Code Point (NChar) | ✘ |

NFC Quick Check (NFC_QC) | Yes |

NFD Quick Check (NFD_QC) | Yes |

NFKC Casefold (NFKC_CF) | |

NFKC Quick Check (NFKC_QC) | No |

NFKD Quick Check (NFKD_QC) | No |

Numeric Type (nt) | Numeric |

Numeric Value (nv) | 1 |

Other Alphabetic (OAlpha) | ✘ |

Other Default Ignorable Code Point (ODI) | ✘ |

Other Grapheme Extend (OGr_Ext) | ✘ |

Other ID Continue (OIDC) | ✘ |

Other ID Start (OIDS) | ✘ |

Other Lowercase (OLower) | ✘ |

Other Math (OMath) | ✘ |

Other Uppercase (OUpper) | ✘ |

Pattern Syntax (Pat_Syn) | ✘ |

Pattern White Space (Pat_WS) | ✘ |

Quotation Mark (QMark) | ✘ |

Radical (Radical) | ✘ |

Sentence Break (SB) | Other |

Simple Case Folding (scf) | |

Script Extension (scx) | Common |

Soft Dotted (SD) | ✘ |

STerm (STerm) | ✘ |

Terminal Punctuation (Term) | ✘ |

Unified Ideograph (UIdeo) | ✘ |

Variation Selector (VS) | ✘ |

Word Break (WB) | Other |

White Space (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) | ✔ |