Home: go to the homepage U+27C0 to U+27EF Miscellaneous Mathematical Symbols-A
Glyph for U+27C2
Source: Noto Sans Math

U+27C2 Perpendicular

U+27C2 was added in Unicode version 4.1 in 2005. It belongs to the block U+27C0 to U+27EF Miscellaneous Mathematical Symbols-A in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as orthogonal to.

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+27C2 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.

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 (r0,⊥)

as well as

  • Mixed radix decoding in the APL programming language

The glyph of the up tack appears as an upside-down 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 similar-looking 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
10178
UTF-8 E2 9F 82
UTF-16 27 C2
UTF-32 00 00 27 C2
URL-Quoted %E2%9F%82
HTML hex reference ⟂
Wrong windows-1252 Mojibake ⟂
alias orthogonal to
Encoding: GB18030 (hex bytes) 81 37 CF 32

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age (age) 4.1 (2005)
Unicode Name (na) PERPENDICULAR
Unicode 1 Name (na1)
Block (blk) Miscellaneous Mathematical Symbols-B
General Category (gc) Math Symbol
Script (sc) Common
Bidirectional Category (bc) Other Neutral
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+27C2 Perpendicular
Lowercase (Lower) ✘︎
Simple Lowercase Mapping (slc) Glyph for U+27C2 Perpendicular
Lowercase Mapping (lc) Glyph for U+27C2 Perpendicular
Uppercase (Upper) ✘︎
Simple Uppercase Mapping (suc) Glyph for U+27C2 Perpendicular
Uppercase Mapping (uc) Glyph for U+27C2 Perpendicular
Simple Titlecase Mapping (stc) Glyph for U+27C2 Perpendicular
Titlecase Mapping (tc) Glyph for U+27C2 Perpendicular
Case Folding (cf) Glyph for U+27C2 Perpendicular
ASCII Hex Digit (AHex) ✘︎
Alphabetic (Alpha) ✘︎
Bidi Control (Bidi_C) ✘︎
Bidi Mirrored (Bidi_M) ✘︎
Composition Exclusion (CE) ✘︎
Case Ignorable (CI) ✘︎
Changes When Casefolded (CWCF) ✘︎
Changes When Casemapped (CWCM) ✘︎
Changes When NFKC Casefolded (CWKCF) ✘︎
Changes When Lowercased (CWL) ✘︎
Changes When Titlecased (CWT) ✘︎
Changes When Uppercased (CWU) ✘︎
Cased (Cased) ✘︎
Full Composition Exclusion (Comp_Ex) ✘︎
Default Ignorable Code Point (DI) ✘︎
Dash (Dash) ✘︎
Deprecated (Dep) ✘︎
Diacritic (Dia) ✘︎
Emoji Modifier Base (EBase) ✘︎
Emoji Component (EComp) ✘︎
Emoji Modifier (EMod) ✘︎
Emoji Presentation (EPres) ✘︎
Emoji (Emoji) ✘︎
Extender (Ext) ✘︎
Extended Pictographic (ExtPict) ✘︎
FC NFKC Closure (FC_NFKC) Glyph for U+27C2 Perpendicular
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base) ✔︎
Grapheme Extend (Gr_Ext) ✘︎
Grapheme Link (Gr_Link) ✘︎
Hex Digit (Hex) ✘︎
Hyphen (Hyphen) ✘︎
ID Continue (IDC) ✘︎
ID Start (IDS) ✘︎
IDS Binary Operator (IDSB) ✘︎
IDS Trinary Operator and (IDST) ✘︎
IDSU (IDSU) 0
ID_Compat_Math_Continue (ID_Compat_Math_Continue) 0
ID_Compat_Math_Start (ID_Compat_Math_Start) 0
Ideographic (Ideo) ✘︎
InCB (InCB) None
Indic Mantra Category (InMC)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
Jamo Short Name (JSN)
Join Control (Join_C) ✘︎
Logical Order Exception (LOE) ✘︎
Modifier Combining Mark (MCM) ✘︎
Math (Math) ✔︎
Noncharacter Code Point (NChar) ✘︎
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) Glyph for U+27C2 Perpendicular
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+27C2 Perpendicular
NFKD Quick Check (NFKD_QC) Yes
Other Alphabetic (OAlpha) ✘︎
Other Default Ignorable Code Point (ODI) ✘︎
Other Grapheme Extend (OGr_Ext) ✘︎
Other ID Continue (OIDC) ✘︎
Other ID Start (OIDS) ✘︎
Other Lowercase (OLower) ✘︎
Other Math (OMath) ✘︎
Other Uppercase (OUpper) ✘︎
Prepended Concatenation Mark (PCM) ✘︎
Pattern Syntax (Pat_Syn) ✔︎
Pattern White Space (Pat_WS) ✘︎
Quotation Mark (QMark) ✘︎
Regional Indicator (RI) ✘︎
Radical (Radical) ✘︎
Sentence Break (SB) Other
Soft Dotted (SD) ✘︎
Sentence Terminal (STerm) ✘︎
Terminal Punctuation (Term) ✘︎
Unified Ideograph (UIdeo) ✘︎
Variation Selector (VS) ✘︎
Word Break (WB) Other
White Space (WSpace) ✘︎
XID Continue (XIDC) ✘︎
XID Start (XIDS) ✘︎
Expands On NFC (XO_NFC) ✘︎
Expands On NFD (XO_NFD) ✘︎
Expands On NFKC (XO_NFKC) ✘︎
Expands On NFKD (XO_NFKD) ✘︎
Bidi Paired Bracket (bpb) Glyph for U+27C2 Perpendicular
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) neutral
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Alphabetic
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+27C2 Perpendicular
Script Extension (scx)
Vertical Orientation (vo) R