Journal of Formalized Mathematics
Volume 9, 1997
University of Bialystok
Copyright (c) 1997
Association of Mizar Users
Introduction to the Homotopy Theory
-
Adam Grabowski
-
University of Bialystok
Summary.
-
The paper introduces some preliminary notions concerning
the homotopy theory according to [15]: paths and
arcwise connected to topological spaces.
The basic operations on paths (addition and
reversing) are defined.
In the last section the predicate: $P, Q$ {\em are homotopic}
is defined. We also showed some properties of the product of
two topological spaces needed to prove reflexivity and symmetry
of the above predicate.
The terminology and notation used in this paper have been
introduced in the following articles
[20]
[10]
[22]
[16]
[23]
[7]
[9]
[8]
[19]
[13]
[4]
[1]
[12]
[18]
[11]
[17]
[21]
[24]
[14]
[6]
[5]
[2]
[3]
-
Preliminaries
-
Paths and arcwise connected spaces
-
Basic operations on paths
-
The product of two topological spaces
Bibliography
- [1]
Grzegorz Bancerek.
Cardinal numbers.
Journal of Formalized Mathematics,
1, 1989.
- [2]
Jozef Bialas and Yatsuka Nakamura.
Dyadic numbers and T$_4$ topological spaces.
Journal of Formalized Mathematics,
7, 1995.
- [3]
Jozef Bialas and Yatsuka Nakamura.
The theorem of Weierstrass.
Journal of Formalized Mathematics,
7, 1995.
- [4]
Leszek Borys.
Paracompact and metrizable spaces.
Journal of Formalized Mathematics,
3, 1991.
- [5]
Czeslaw Bylinski.
Basic functions and operations on functions.
Journal of Formalized Mathematics,
1, 1989.
- [6]
Czeslaw Bylinski.
Binary operations.
Journal of Formalized Mathematics,
1, 1989.
- [7]
Czeslaw Bylinski.
Functions and their basic properties.
Journal of Formalized Mathematics,
1, 1989.
- [8]
Czeslaw Bylinski.
Functions from a set to a set.
Journal of Formalized Mathematics,
1, 1989.
- [9]
Czeslaw Bylinski.
Partial functions.
Journal of Formalized Mathematics,
1, 1989.
- [10]
Czeslaw Bylinski.
Some basic properties of sets.
Journal of Formalized Mathematics,
1, 1989.
- [11]
Czeslaw Bylinski.
The modification of a function by a function and the iteration of the composition of a function.
Journal of Formalized Mathematics,
2, 1990.
- [12]
Agata Darmochwal.
Compact spaces.
Journal of Formalized Mathematics,
1, 1989.
- [13]
Agata Darmochwal.
Families of subsets, subspaces and mappings in topological spaces.
Journal of Formalized Mathematics,
1, 1989.
- [14]
Agata Darmochwal and Yatsuka Nakamura.
Metric spaces as topological spaces --- fundamental concepts.
Journal of Formalized Mathematics,
3, 1991.
- [15]
Marvin J. Greenberg.
\em Lectures on Algebraic Topology.
W. A. Benjamin, Inc., 1973.
- [16]
Krzysztof Hryniewiecki.
Basic properties of real numbers.
Journal of Formalized Mathematics,
1, 1989.
- [17]
Jaroslaw Kotowicz.
Monotone real sequences. Subsequences.
Journal of Formalized Mathematics,
1, 1989.
- [18]
Beata Padlewska.
Connected spaces.
Journal of Formalized Mathematics,
1, 1989.
- [19]
Beata Padlewska and Agata Darmochwal.
Topological spaces and continuous functions.
Journal of Formalized Mathematics,
1, 1989.
- [20]
Andrzej Trybulec.
Tarski Grothendieck set theory.
Journal of Formalized Mathematics,
Axiomatics, 1989.
- [21]
Andrzej Trybulec.
A Borsuk theorem on homotopy types.
Journal of Formalized Mathematics,
3, 1991.
- [22]
Zinaida Trybulec.
Properties of subsets.
Journal of Formalized Mathematics,
1, 1989.
- [23]
Edmund Woronowicz.
Relations and their basic properties.
Journal of Formalized Mathematics,
1, 1989.
- [24]
Mariusz Zynel and Adam Guzowski.
\Tzero\ topological spaces.
Journal of Formalized Mathematics,
6, 1994.
Received September 10, 1997
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