U+212F Script Small E
U+212F was added to Unicode in version 1.1 (1993). It belongs to the block
This character is a Lowercase Letter and is commonly used, that is, in no specific script. The character is also known as error and natural exponent.
The glyph is a Font composition of the glyph
The Wikipedia has the following information about this codepoint:
The number e, also known as Euler's number, is a mathematical constant approximately equal to 2.71828 which can be characterized in many ways. It is the base of the natural logarithms. It is the limit of (1 + 1/n)^{n} as n approaches infinity, an expression that arises in the study of compound interest. It can also be calculated as the sum of the infinite series
It is also the unique positive number a such that the graph of the function y = a^{x} has a slope of 1 at x = 0.
The (natural) exponential function f(x) = e^{x} is the unique function f that equals its own derivative and satisfies the equation f(0) = 1; hence one can also define e as f(1). The natural logarithm, or logarithm to base e, is the inverse function to the natural exponential function. The natural logarithm of a number k > 1 can be defined directly as the area under the curve y = 1/x between x = 1 and x = k, in which case e is the value of k for which this area equals one (see image). There are various other characterizations.
The number e is sometimes called Euler's number (not to be confused with Euler's constant γ {displaystyle gamma } ), after the Swiss mathematician Leonhard Euler, or Napier's constant, after John Napier. The constant was discovered by the Swiss mathematician Jacob Bernoulli while studying compound interest.
The number e is of great importance in mathematics, alongside 0, 1, π, and i. All five appear in one formulation of Euler's identity e i π + 1 = 0 {displaystyle e^{ipi }+1=0} , and play important and recurring roles across mathematics. Like the constant π, e is irrational (it cannot be represented as a ratio of integers) and transcendental (it is not a root of any nonzero polynomial with rational coefficients). To 50 decimal places the value of e is:
Representations
System  Representation 

Nº  8495 
UTF8  E2 84 AF 
UTF16  21 2F 
UTF32  00 00 21 2F 
URLQuoted  %E2%84%AF 
HTML hex reference  ℯ 
Wrong windows1252 Mojibake  â„¯ 
HTML named entity  ℯ 
alias  error 
alias  natural exponent 
L^{A}T_{E}X  \mathscr{e} 
Related Characters
Confusables
Elsewhere
Complete Record
Property  Value 

1.1 (1993)  
SCRIPT SMALL E  
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Lowercase Letter  
Common  
Left To Right  
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