Address
:
[go:
up one dir
,
main page
]
Include Form
Remove Scripts
Accept Cookies
Show Images
Show Referer
Rotate13
Base64
Strip Meta
Strip Title
Session Cookies
Home
Random
Nearby
Log in
Settings
Donate
About Wikidata
Disclaimers
Search
(Q2921739)
Watch
English
open ball
mathematical ball that excludes its bounding sphere
In more languages
default for all languages
No label defined
No description defined
edit
Statements
subclass of
open set
0 references
ball
0 references
convex set
0 references
part of
closed ball
0 references
defining formula
{
x
→
:
|
|
x
→
−
x
0
→
|
|
2
<
r
2
}
{\displaystyle \left\{{\vec {x}}:||{\vec {x}}-{\vec {x_{0}}}||^{2}<r^{2}\right\}}
applies to part, aspect, or form
open set
0 references
has characteristic
volume
defining formula
V
=
4
3
π
r
3
{\displaystyle V={\frac {4}{3}}\pi r^{3}}
0 references
surface area
defining formula
S
=
4
π
r
2
{\displaystyle S=4\pi r^{2}}
0 references
maintained by WikiProject
WikiProject Mathematics
0 references
opposite of
closed ball
0 references
different from
ball
1 reference
inferred from
ball
Identifiers
MathWorld ID
OpenBall
0 references
Metamath statement ID
df-bl
0 references
Sitelinks
Wikipedia
(2 entries)
edit
dewiki
Offene Kugel
frwiki
Boule ouverte
Wikibooks
(0 entries)
edit
Wikinews
(0 entries)
edit
Wikiquote
(0 entries)
edit
Wikisource
(0 entries)
edit
Wikiversity
(0 entries)
edit
Wikivoyage
(0 entries)
edit
Wiktionary
(0 entries)
edit
Multilingual sites
(0 entries)
edit