U+1D53B Mathematical DoubleStruck Capital D
U+1D53B was added in Unicode version 3.1 in 2001. It belongs to the block
This character is a Uppercase Letter and is commonly used, that is, in no specific script.
The glyph is a font version of the glyph
The Wikipedia has the following information about this codepoint:
In geometry, a disk (also spelled disc) is the region in a plane bounded by a circle. A disk is said to be closed if it contains the circle that constitutes its boundary, and open if it does not.
For a radius, $r$, an open disk is usually denoted as ${D}_{r}$ and a closed disk is $\stackrel{{\rm B}\u2015}{{D}_{r}}$. However in the field of topology the closed disk is usually denoted as ${D}^{2}$ while the open disk is $\mathrm{Int}\beta \x81\u2018{D}^{2}$.
Representations
System  Representation 

NΒΊ  120123 
UTF8  F0 9D 94 BB 
UTF16  D8 35 DD 3B 
UTF32  00 01 D5 3B 
URLQuoted  %F0%9D%94%BB 
HTML hex reference  𝔻 
Wrong windows1252 Mojibake  Γ°ΒβΒ» 
HTML named entity  𝔻 
L^{A}T_{E}X  \mathbb{D} 
Related Characters
Confusables
Elsewhere
Complete Record
Property  Value 

3.1 (2001)  
MATHEMATICAL DOUBLESTRUCK CAPITAL D  
β  
Mathematical Alphanumeric Symbols  
Uppercase Letter  
Common  
Left To Right  
Not Reordered  
font  


β  




β  










β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  


Any  
β  
β  
β  
β  
β  
β  
β  
β  
β  
0  
0  
0  
β  
None  
β  
NA  
Other  
β  
β  
β  
β  
β  
Yes  
Yes  


No  


No  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
β  
Upper  
β  
β  
β  
β  
β  
Alphabetic Letter  
β  
β  
β  
β  
β  
β  
β  


None  
neutral  
Not Applicable  
β  
No_Joining_Group  
Non Joining  
Alphabetic  
none  
not a number  


R 