U+2AEB Double Up Tack
U+2AEB was added in Unicode version 3.2 in 2002. It belongs to the block
This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as independence.
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+2AEB forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The up tack or falsum (⊥,
ot
in LaTeX, U+22A5 in Unicode) is a constant symbol used to represent:
 The truth value 'false', or a logical constant denoting a proposition in logic that is always false (often called "falsum" or "absurdum").
 The bottom element in wheel theory and lattice theory, which also represents absurdum when used for logical semantics
 The bottom type in type theory, which is the bottom element in the subtype relation. This may coincide with the empty type, which represents absurdum under the Curry–Howard correspondence
 The "undefined value" in quantum physics interpretations that reject counterfactual definiteness, as in (r_{0},⊥)
as well as
 Mixed radix decoding in the APL programming language
The glyph of the up tack appears as an upsidedown tee symbol, and as such is sometimes called eet (the word "tee" in reverse). Tee plays a complementary or dual role in many of these theories.
The similarlooking perpendicular symbol (⟂,
perp
in LaTeX, U+27C2 in Unicode) is a binary relation symbol used to represent:
 Perpendicularity of lines in geometry
 Orthogonality in linear algebra
 Independence of random variables in probability theory
 Coprimality in number theory
The double tack up symbol (⫫, U+2AEB in Unicode) is a binary relation symbol used to represent:
 Conditional independence of random variables in probability theory
Representations
System  Representation 

Nº  10987 
UTF8  E2 AB AB 
UTF16  2A EB 
UTF32  00 00 2A EB 
URLQuoted  %E2%AB%AB 
HTML hex reference  ⫫ 
Wrong windows1252 Mojibake  â«« 
HTML named entity  ⫫ 
alias  independence 
L^{A}T_{E}X  \ElsevierGlyph{E30D} 
Elsewhere
Complete Record
Property  Value 

3.2 (2002)  
DOUBLE UP TACK  
—  
Supplemental ArrowsC  
Math Symbol  
Common  
Other Neutral  
Not Reordered  
none  


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R 