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Upward arrows are often used to indicate an increase in a numerical value, and downward arrows indicate a decrease. In mathematical logic, a right-facing arrow indicates material conditional, and a left-right (bidirectional) arrow indicates if and only if, an upwards arrow indicates the NAND operator (negation of conjunction), an downwards arrow indicates the NOR operator (negation of ...
In internet forums, on social networking sites such as Facebook, or in online chats, one or more carets may be used beneath the text of another post, representing an upward-pointing arrow to that post; [10] in addition to the arrow usage, it can also mean that the user who posted the ^ agrees with the above post. Multiple carets may be used to ...
↑, a notation of Knuth's up-arrow notation for very large integers; ↑, a mathematical game theory position Up; ↑ or Sheffer stroke, the logical connective "not both" or NAND; ↑, the APL function 'take' "Increased" (and similar meanings), in medical notation; ↑, a chemical symbol for production of gas, which bubbles up.
(the symbol may also indicate the domain and codomain of a function; ... upwards arrow vertical line ... Text is available under the Creative Commons Attribution ...
Caret notation is used to describe control characters in output by many programs, particularly Unix terminal drivers and text file viewers such as more and less commands. Although the use of control-codes is somewhat standard, some uses differ from operating system to operating system, or even from program to program.
The Arrows block contains eight emoji: U+2194–U+2199 and U+21A9–U+21AA. [3] [4]The block has sixteen standardized variants defined to specify emoji-style (U+FE0F VS16) or text presentation (U+FE0E VS15) for the eight emoji, all of which default to a text presentation.
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The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it;