PlanetMath: square

(more info)

Math for the people, by the people.

Main Menu

sections Encyclopædia
Papers
Books
Expositions

meta Requests (200)
Orphanage
Unclass'd
Unproven (490)
Corrections (6)
Classification

talkback Polls
Forums
Feedback
Bug Reports

downloads Snapshots
PM Book

information News
Docs
Wiki
ChangeLog
TODO List
Legalese
About

Entry average rating: No information on entry rating

square

(Definition)

The square of a number is the number obtained multiplying by itself. It's denoted as .

Some examples:

$\displaystyle 5^2$	$\displaystyle =$	$\displaystyle 25$
$\displaystyle \left(\frac{1}{3}\right)^2$	$\displaystyle =$	$\displaystyle \frac{1}{9}$
$\displaystyle 0^2$	$\displaystyle =$	0
$\displaystyle (-0.5)^2$	$\displaystyle =$	$\displaystyle 0.25$

A perfect square is the square of an integer. The first few perfect squares are 0, 1, 4, 9, 16, 25, $\ldots$ .

"square" is owned by drini. [ full author list (3) | owner history (1) ]

(view preamble)

See Also: cube of a number

Other names:

second power

Also defines:

perfect square

Attachments:: square of sum (Topic) by pahio

Log in to rate this entry.
(view current ratings)

Cross-references: integer, number
There are 131 references to this entry.

This is version 6 of square, born on 2001-12-12, modified 2006-12-12.
Object id is 1087, canonical name is SquareOfANumber.
Accessed 9926 times total.

Classification:

AMS MSC:	26-00 (Real functions :: General reference works )
	30-00 (Functions of a complex variable :: General reference works )
	11-00 (Number theory :: General reference works )

Pending Errata and Addenda

None.[ View all 3 ]

Discussion

forum policy

No messages.

Interact