Search results
Results From The WOW.Com Content Network
propositional logic, Boolean algebra, first-order logic. ⊥ {\displaystyle \bot } denotes a proposition that is always false. The symbol ⊥ may also refer to perpendicular lines. The proposition. ⊥ ∧ P {\displaystyle \bot \wedge P} is always false since at least one of the two is unconditionally false. ∀.
1 Control-C has typically been used as a "break" or "interrupt" key. 2 Control-D has been used to signal "end of file" for text typed in at the terminal on Unix / Linux systems. Windows, DOS, and older minicomputers used Control-Z for this purpose. 3 Control-G is an artifact of the days when teletypes were in use.
Bookshelf Symbol 7 is a typeface which was packaged with Microsoft Office 2003.It is a pi font encoding several less common variants of Roman letters (including a small subset of those used in the International Phonetic Alphabet), a few musical symbols and mathematical symbols, a few additional symbols (including torii), and a few rare or obscure kanji.
The currency sign was once a part of the Mac OS Roman character set, but Apple changed the symbol at that code point to the euro sign in Mac OS 8.5.In pre-Unicode Windows character sets (Windows-1252), the generic currency sign was retained at 0xA4 and the euro sign was introduced as a new code point, at 0x80 in the little used (by Microsoft) control-code space 0x80 to 0x9F.
Wedge ( ∧) is a symbol that looks similar to an in-line caret (^). It is used to represent various operations. In Unicode, the symbol is encoded U+2227 ∧ LOGICAL AND ( ∧, ∧) and by \wedge and \land in TeX. The opposite symbol (∨) is called a vel, or sometimes a (descending) wedge. Some authors who call the descending wedge vel ...
A trademark is a symbol, word, or words legally registered or established by use as representing a company, product or service. [1] [2] Unregistered trademarks can instead be marked with the trademark symbol, ™, while unregistered service marks are marked with the service mark symbol, ℠.
A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters. This sequence is typically entered by the user during the installation of computer software, and is ...
Tombstone (typography) In mathematics, the tombstone, halmos, end-of-proof, or Q.E.D. symbol "∎" (or " ") is a symbol used to denote the end of a proof, in place of the traditional abbreviation "Q.E.D." for the Latin phrase "quod erat demonstrandum". It is inspired by the typographic practice of end marks, an element that marks the end of an ...