U+27D8 "⟘" Large Up Tack Unicode Character

U+27D8 "⟘" Large Up Tack is a mathematical and technical symbol representing a logical or semantic relation in formal languages, primarily defined as the negation of a down tack, often used in order theory or lattice theory to denote the concept of "does not meet" or a failure of a lower bound relationship. It visually resembles an inverted uppercase 'T' with a wider horizontal bar, and it belongs to the Miscellaneous Mathematical Symbols-A block, where it serves as a complementary operator to the similarly sized down tack, typically within contexts such as natural deduction or algebraic structures where precise relational negation is required.

General Properties

Code Point	U+27D8
Version Added	3.2
Name	Large Up Tack
Block	Miscellaneous Mathematical Symbols-A
General Category	Math Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	⟘
HTML Hex Encoding	⟘
UTF-8 Encoding	0xE2 0x9F 0x98
UTF-16 Encoding	0x27D8
UTF-32 Encoding	0x000027D8
C/C++/Java Escape	\u27d8

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Pattern Syntax	Yes
Math	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other