U+22EA Not Normal Subgroup Of
U+22EA was added in Unicode version 1.1 in 1993. It belongs to the block
This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is a canonical composition of the glyphs
The Wikipedia has the following information about this codepoint:
In abstract algebra, a normal subgroup (also known as an invariant subgroup or selfconjugate subgroup) is a subgroup that is invariant under conjugation by members of the group of which it is a part. In other words, a subgroup $N$ of the group $G$ is normal in $G$ if and only if $gn{g}^{1}\in N$ for all $g\in G$ and $n\in N.$ The usual notation for this relation is $N\u25c3G.$
Normal subgroups are important because they (and only they) can be used to construct quotient groups of the given group. Furthermore, the normal subgroups of $G$ are precisely the kernels of group homomorphisms with domain $G,$ which means that they can be used to internally classify those homomorphisms.
Évariste Galois was the first to realize the importance of the existence of normal subgroups.
Representations
System  Representation 

Nº  8938 
UTF8  E2 8B AA 
UTF16  22 EA 
UTF32  00 00 22 EA 
URLQuoted  %E2%8B%AA 
HTML hex reference  ⋪ 
Wrong windows1252 Mojibake  â‹ª 
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HTML named entity  ⋪ 
L^{A}T_{E}X  \ntriangleleft 
Related Characters
Elsewhere
Complete Record
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