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OurBigBook.com
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Area of mathematics
Geometry and topology
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OurBigBook.com
Words: 47
Articles: 2
The open disc with centre
z
and radius
r
>
0
is
{
w
:
∣
w
−
z
∣
<
r
}
.
Table of contents
47
2
Unit disc
Open disc
10
Disc
Open disc
25
Ancestors
(6)
Open set
Topology
Geometry and topology
Area of mathematics
Mathematics
Home
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(3)
Solution
Solution
Solution