U+2147 DOUBLE-STRUCK ITALIC SMALL E

U+2147 was added to Unicode in version 3.2 (2002). It belongs to the block Letterlike Symbols in the Basic Multilingual Plane.

This character is a Lowercase Letter and is commonly used, that is, in no specific script.

The glyph is a Font composition of the glyphs e. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 29 other glyphs. In text U+2147 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

The term exponential function is almost exclusively used to mean the natural exponential function ex, where e is Euler's number, a number (approximately 2.718281828) such that the function ex is its own derivative. The exponential function is used to model a relationship in which a constant change in the independent variable gives the same proportional change (i.e. percentage increase or decrease) in the dependent variable. The function is often written as exp(x), especially when it is impractical to write the independent variable as a superscript. The exponential function is widely used in physics, chemistry, engineering, mathematical biology, economics and mathematics.

The graph of y = ex is upward-sloping, and increases faster as x increases. The graph always lies above the x-axis but can get arbitrarily close to it for negative x; thus, the x-axis is a horizontal asymptote. The slope of the tangent to the graph at each point is equal to its y coordinate at that point. The inverse function is the natural logarithm ln(x); because of this, some old texts refer to the exponential function as the antilogarithm.

In general, the variable x can be any real or complex number or even an entirely different kind of mathematical object; see the formal definition below.

Representations

System Representation
8519
UTF-8 E2 85 87
UTF-16 21 47
UTF-32 00 00 21 47
URL-Quoted %E2%85%87
HTML-Escape ⅇ
Wrong windows-1252 Mojibake ⅇ
HTML-Escape ⅇ
HTML-Escape ⅇ
HTML-Escape ⅇ

Related Characters

Confusables

  • e
  • ℮
  • e
  • æ
  • œ
  • ɇ
  • е
  • ҽ
  • ҿ
  • ӕ
  • ᵫ
  • ℮
  • ℯ
  • ⅇ
  • ⒠
  • ꬲ
  • e
  • 𝐞
  • 𝑒
  • 𝒆
  • 𝓮
  • 𝔢
  • 𝕖
  • 𝖊
  • 𝖾
  • 𝗲
  • 𝘦
  • 𝙚
  • 𝚎

Elsewhere

Complete Record

Property Value
Age (age) 3.2
Unicode Name (na) DOUBLE-STRUCK ITALIC SMALL E
Unicode 1 Name (na1)
Block (blk) Letterlike_Symbols
General Category (gc) Lowercase Letter
Script (sc) Common
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) Font
Decomposition Mapping (dm) e
Lowercase (Lower)
Simple Lowercase Mapping (slc) ⅇ
Lowercase Mapping (lc) ⅇ
Uppercase (Upper)
Simple Uppercase Mapping (suc) ⅇ
Uppercase Mapping (uc) ⅇ
Simple Titlecase Mapping (stc) ⅇ
Titlecase Mapping (tc) ⅇ
Case Folding (cf) ⅇ
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) ⅇ
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) ⅇ
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
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) e
NFKC Quick Check (NFKC_QC) No
NFKD Quick Check (NFKD_QC) No
Numeric Type (nt) None
Numeric Value (nv) NaN
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) Lower
Simple Case Folding (scf) ⅇ
Script Extension (scx) Common
Soft Dotted (SD)
STerm (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) ALetter
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)