Difference between revisions of "Zero"
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== See also == | == See also == | ||
+ | * [[Algebraic geometry]] | ||
* [[Constant]] | * [[Constant]] | ||
* [[Number theory]] | * [[Number theory]] | ||
[[Category:Constants]] | [[Category:Constants]] |
Revision as of 19:20, 4 August 2006
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Zero, or 0, is the name traditionally given to the additive identity in number systems such as abelian groups, rings and fields (especially in the particular examples of the integers, rational numbers, real numbers and complex numbers).
The development of a concept and notation for 0, probably in ancient Indian civilization, and its subsequent transmission to Europe via the Persians and Arabs, was fundamental to the success of western mathematics in fields beyond geometry. It has suprisingly much relevance due to its significance in positional number systems. For instance, normal commercial interactions might be seriously slowed if cashiers had to make change on a purchase of LXIV dollars with bills marked L, X, V and I when handed XC dollars.
Alternate usage
Sometimes, the word zero is used to mean root. For example, one might say, "The function has its only zero at ."