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Difference between revisions of "Bolzano-Weierstrass theorem"

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<table><TR><TD valign="top">[1]</TD> <TD valign="top">  B. Bolzano,  ''Abhandlungen der königlichen böhmischen Gesellschaft der Wissenschaft. v.''  (1817)</TD></TR></table>
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<table><TR><TD valign="top">[1]</TD> <TD valign="top">  B. Bolzano,  ''Abhandlungen der königlichen böhmischen Gesellschaft der Wissenschaften. v.''  (1817)</TD></TR></table>

Revision as of 19:55, 20 October 2012

Each bounded sequence of numbers contains a convergent subsequence. The theorem applies both to real and complex numbers. It can be generalized to include more-general objects, e.g. any bounded infinite set in -dimensional Euclidean space has at least one limit point in that space. There exist analogues of this theorem for even more-general spaces.

The theorem was demonstrated by B. Bolzano [1]; it was later also independently deduced by K. Weierstrass.

References

[1] B. Bolzano, Abhandlungen der königlichen böhmischen Gesellschaft der Wissenschaften. v. (1817)
How to Cite This Entry:
Bolzano-Weierstrass theorem. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Bolzano-Weierstrass_theorem&oldid=28586
This article was adapted from an original article by L.D. Kudryavtsev (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article