| Title:
|
Coincidence free pairs of maps (English) |
| Author:
|
Koschorke, Ulrich |
| Language:
|
English |
| Journal:
|
Archivum Mathematicum |
| ISSN:
|
0044-8753 (print) |
| ISSN:
|
1212-5059 (online) |
| Volume:
|
42 |
| Issue:
|
5 |
| Year:
|
2006 |
| Pages:
|
105-117 |
| Summary lang:
|
English |
| . |
| Category:
|
math |
| . |
| Summary:
|
This paper centers around two basic problems of topological coincidence theory. First, try to measure (with the help of Nielsen and minimum numbers) how far a given pair of maps is from being loose, i.e. from being homotopic to a pair of coincidence free maps. Secondly, describe the set of loose pairs of homotopy classes. We give a brief (and necessarily very incomplete) survey of some old and new advances concerning the first problem. Then we attack the second problem mainly in the setting of homotopy groups. This leads also to a very natural filtration of all homotopy sets. Explicit calculations are carried out for maps into spheres and projective spaces. (English) |
| Keyword:
|
coincidence |
| Keyword:
|
Nielsen number |
| Keyword:
|
minimum number |
| Keyword:
|
configuration space |
| Keyword:
|
projective space |
| Keyword:
|
filtration |
| MSC:
|
55M20 |
| MSC:
|
55Q52 |
| MSC:
|
57R22 |
| idZBL:
|
Zbl 1164.55300 |
| idMR:
|
MR2322402 |
| . |
| Date available:
|
2008-06-06T22:49:11Z |
| Last updated:
|
2012-05-10 |
| Stable URL:
|
http://hdl.handle.net/10338.dmlcz/108022 |
| . |
| Reference:
|
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| Reference:
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| Reference:
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| . |
