Wedge (symbol): Difference between revisions
Content deleted Content added
Wedge and vel are different symbols |
No edit summary |
||
| Line 3: | Line 3: | ||
* [[Logical conjunction]] in [[propositional calculus|propositional logic]] |
* [[Logical conjunction]] in [[propositional calculus|propositional logic]] |
||
* [[Join and meet|Meet]] in [[lattice (order)|lattice theory]] |
* [[Join and meet|Meet]] in [[lattice (order)|lattice theory]] |
||
* [[Exterior algebra|Exterior |
* [[Exterior algebra|Exterior product]] or wedge product in [[differential geometry]]. |
||
It was used by [[Bertrand Russell|Russell]] and [[Alfred North Whitehead|Whitehead]] in ''[[Principia Mathematica]]''. In [[Unicode]] the symbol is encoded {{unichar|2227|Logical and|html=}} and by <code>\wedge</code> and <code>\land</code> in [[TeX]]. The opposite symbol (∨) is called a [[Vel (symbol)|vel]], or sometimes a (descending) wedge. Some authors who call the descending wedge 'vel' often call the ascending wedge ''ac'' (the corresponding Latin word for "and", also spelled "atque") keeping their usage parallel. |
It was used by [[Bertrand Russell|Russell]] and [[Alfred North Whitehead|Whitehead]] in ''[[Principia Mathematica]]''. In [[Unicode]] the symbol is encoded {{unichar|2227|Logical and|html=}} and by <code>\wedge</code> and <code>\land</code> in [[TeX]]. The opposite symbol (∨) is called a [[Vel (symbol)|vel]], or sometimes a (descending) wedge. Some authors who call the descending wedge 'vel' often call the ascending wedge ''ac'' (the corresponding Latin word for "and", also spelled "atque") keeping their usage parallel. |
||
Revision as of 14:58, 16 February 2015
Wedge[1] (∧) is a symbol used to represent:
- Logical conjunction in propositional logic
- Meet in lattice theory
- Exterior product or wedge product in differential geometry.
It was used by Russell and Whitehead in Principia Mathematica. 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' often call the ascending wedge ac (the corresponding Latin word for "and", also spelled "atque") keeping their usage parallel.
The wedge looks similar to the caret (^).
