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.

MML Identifier: BORSUK_2

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]

Contents (PDF format)

  1. Preliminaries
  2. Paths and arcwise connected spaces
  3. Basic operations on paths
  4. The product of two topological spaces

Bibliography

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[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.
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[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.
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[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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