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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 ...
Trademark symbol. Look up ™ in Wiktionary, the free dictionary. The trademark symbol ™ is a symbol to indicate that the preceding mark is a trademark, specifically an unregistered trademark. It complements the registered trademark symbol ® which is reserved for trademarks registered with an appropriate government agency.