Home U+1D400 to U+1D7FF Mathematical Alphanumeric Symbols

# U+1D54B MATHEMATICAL DOUBLE-STRUCK CAPITAL T

U+1D54B was added to Unicode in version 3.1 (2001). It belongs to the block U+1D400 to U+1D7FF Mathematical Alphanumeric Symbols in the U+10000 to U+1FFFF Supplementary Multilingual Plane.

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

The glyph is a Font composition of the glyph Latin Capital Letter T. 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 1 other glyphs. In text U+1D54B behaves as Alphabetic regarding line breaks. It has type Upper for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

In geometry, a torus (plural tori, colloquially donut or doughnut) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis that is coplanar with the circle.

If the axis of revolution does not touch the circle, the surface has a ring shape and is called a torus of revolution. If the axis of revolution is tangent to the circle, the surface is a horn torus. If the axis of revolution passes twice through the circle, the surface is a spindle torus. If the axis of revolution passes through the center of the circle, the surface is a degenerate torus, a double-covered sphere. If the revolved curve is not a circle, the surface is a related shape, a toroid.

Real-world objects that approximate a torus of revolution include swim rings, inner tubes and ringette rings. Eyeglass lenses that combine spherical and cylindrical correction are toric lenses.

A torus should not be confused with a solid torus, which is formed by rotating a disk, rather than a circle, around an axis. A solid torus is a torus plus the volume inside the torus. Real-world objects that approximate a solid torus include O-rings, non-inflatable lifebuoys, ring doughnuts, and bagels.

In topology, a ring torus is homeomorphic to the Cartesian product of two circles: S1Β ΓΒ S1, and the latter is taken to be the definition in that context. It is a compact 2-manifold of genus 1. The ring torus is one way to embed this space into Euclidean space, but another way to do this is the Cartesian product of the embedding of S1 in the plane with itself. This produces a geometric object called the Clifford torus, a surface in 4-space.

In the field of topology, a torus is any topological space that is homeomorphic to a torus. The surface of a coffee cup and a doughnut are both topological tori with genus one.

An example of a torus can be constructed by taking a rectangular strip of flexible material, for example, a rubber sheet, and joining the top edge to the bottom edge, and the left edge to the right edge, without any half-twists (compare MΓΆbius strip).

## Representations

System Representation
NΒΊ 120139
UTF-8 F0 9D 95 8B
UTF-16 D8 35 DD 4B
UTF-32 00 01 D5 4B
URL-Quoted %F0%9D%95%8B
HTML-Escape &#x1D54B;
Wrong windows-1252 Mojibake Γ°ΒΒΒ
HTML-Escape &Topf;
LATEX \mathbb{T}

## Complete Record

Property Value
Age 3.1 (2001)
Unicode Name MATHEMATICAL DOUBLE-STRUCK CAPITAL T
Unicode 1 Name β
Block Mathematical Alphanumeric Symbols
General Category Uppercase Letter
Script Common
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type Font
Decomposition Mapping Latin Capital Letter T
Lowercase β
Simple Lowercase Mapping Mathematical Double-Struck Capital T
Lowercase Mapping Mathematical Double-Struck Capital T
Uppercase β
Simple Uppercase Mapping Mathematical Double-Struck Capital T
Uppercase Mapping Mathematical Double-Struck Capital T
Simple Titlecase Mapping Mathematical Double-Struck Capital T
Titlecase Mapping Mathematical Double-Struck Capital T
Case Folding Mathematical Double-Struck Capital T
ASCII Hex Digit β
Alphabetic β
Bidi Control β
Bidi Mirrored β
Bidi Paired Bracket Mathematical Double-Struck Capital T
Bidi Paired Bracket Type None
Cased β
Composition Exclusion β
Case Ignorable β
Full Composition Exclusion β
Changes When Casefolded β
Changes When Casemapped β
Changes When NFKC Casefolded β
Changes When Lowercased β
Changes When Titlecased β
Changes When Uppercased β
Dash β
Deprecated β
Default Ignorable Code Point β
Diacritic β
East Asian Width Neutral
Emoji Modifier Base β
Emoji Component β
Emoji Modifier β
Emoji β
Emoji Presentation β
Extender β
Extended Pictographic β
FC NFKC Closure Latin Small Letter T
Grapheme Cluster Break Any
Grapheme Base β
Grapheme Extend β
Hex Digit β
Hangul Syllable Type Not Applicable
Hyphen β
ID Continue β
Ideographic β
ID Start β
IDS Binary Operator β
IDS Trinary Operator and β
Indic Mantra Category β
Indic Positional Category NA
Indic Syllabic Category Other
ISO 10646 Comment β
Joining Group No_Joining_Group
Join Control β
Jamo Short Name β
Joining Type Non Joining
Line Break Alphabetic
Logical Order Exception β
Math β
Noncharacter Code Point β
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Latin Small Letter T
NFKC Quick Check No
NFKD Quick Check No
Numeric Type None
Numeric Value not a number
Other Alphabetic β
Other Default Ignorable Code Point β
Other Grapheme Extend β
Other ID Continue β
Other ID Start β
Other Lowercase β
Other Math β
Other Uppercase β
Pattern Syntax β
Pattern White Space β
Prepended Concatenation Mark β
Quotation Mark β
Regional Indicator β
Sentence Break Upper
Simple Case Folding Mathematical Double-Struck Capital T
Script Extension
Soft Dotted β
Sentence Terminal β
Terminal Punctuation β
Unified Ideograph β
Vertical Orientation R
Variation Selector β
Word Break Alphabetic Letter
White Space β
XID Continue β
XID Start β
Expands On NFC β
Expands On NFD β
Expands On NFKC β
Expands On NFKD β