Journal of Formalized Mathematics
Volume 14, 2002
University of Bialystok
Copyright (c) 2002 Association of Mizar Users

On the General Position of Special Polygons


Mariusz Giero
University of Bialystok

Summary.

In this paper we introduce the notion of general position. We also show some auxiliary theorems for proving Jordan curve theorem. The following main theorems are proved: \begin{enumerate} \item End points of a polygon are in the same component of a complement of another polygon if number of common points of these polygons is even; \item Two points of polygon $L$ are in the same component of a complement of polygon $M$ if two points of polygon $M$ are in the same component of polygon $L.$ \end{enumerate}

This work has been partially supported by CALCULEMUS grant HPRN-CT-2000-00102.

MML Identifier: JORDAN12

The terminology and notation used in this paper have been introduced in the following articles [22] [25] [19] [2] [17] [21] [15] [26] [1] [7] [5] [3] [24] [10] [4] [20] [18] [8] [9] [13] [14] [11] [12] [16] [23] [6]

Contents (PDF format)

  1. Preliminaries
  2. The Notion of General Position and Its Properties
  3. Properties of Being in the Same Component of a Complement of a Polygon
  4. Cells Are Convex
  5. Properties of Points Lying on the Same Line
  6. The Position of the Points of a Polygon with Respect to Another Polygon

Acknowledgments

I would like to thank Prof. Andrzej Trybulec for his help in preparation of this article. I also thank Adam Grabowski, Robert Milewski and Adam Naumowicz for their helpful comments.

Bibliography

[1] Grzegorz Bancerek. Cardinal numbers. Journal of Formalized Mathematics, 1, 1989.
[2] Grzegorz Bancerek. The fundamental properties of natural numbers. Journal of Formalized Mathematics, 1, 1989.
[3] Grzegorz Bancerek and Krzysztof Hryniewiecki. Segments of natural numbers and finite sequences. Journal of Formalized Mathematics, 1, 1989.
[4] Jozef Bialas. Group and field definitions. Journal of Formalized Mathematics, 1, 1989.
[5] Czeslaw Bylinski. Functions and their basic properties. Journal of Formalized Mathematics, 1, 1989.
[6] Czeslaw Bylinski. Some properties of cells on go board. Journal of Formalized Mathematics, 11, 1999.
[7] Agata Darmochwal. Finite sets. Journal of Formalized Mathematics, 1, 1989.
[8] Agata Darmochwal. The Euclidean space. Journal of Formalized Mathematics, 3, 1991.
[9] Agata Darmochwal and Yatsuka Nakamura. The topological space $\calE^2_\rmT$. Arcs, line segments and special polygonal arcs. Journal of Formalized Mathematics, 3, 1991.
[10] Katarzyna Jankowska. Matrices. Abelian group of matrices. Journal of Formalized Mathematics, 3, 1991.
[11] Jaroslaw Kotowicz and Yatsuka Nakamura. Introduction to Go-Board --- part I. Journal of Formalized Mathematics, 4, 1992.
[12] Jaroslaw Kotowicz and Yatsuka Nakamura. Introduction to Go-Board --- part II. Journal of Formalized Mathematics, 4, 1992.
[13] Yatsuka Nakamura and Czeslaw Bylinski. Extremal properties of vertices on special polygons, part I. Journal of Formalized Mathematics, 6, 1994.
[14] Yatsuka Nakamura and Jaroslaw Kotowicz. The Jordan's property for certain subsets of the plane. Journal of Formalized Mathematics, 4, 1992.
[15] Yatsuka Nakamura and Piotr Rudnicki. Vertex sequences induced by chains. Journal of Formalized Mathematics, 7, 1995.
[16] Yatsuka Nakamura and Andrzej Trybulec. Decomposing a Go-Board into cells. Journal of Formalized Mathematics, 7, 1995.
[17] Takaya Nishiyama and Yasuho Mizuhara. Binary arithmetics. Journal of Formalized Mathematics, 5, 1993.
[18] Beata Padlewska. Connected spaces. Journal of Formalized Mathematics, 1, 1989.
[19] Beata Padlewska. Families of sets. Journal of Formalized Mathematics, 1, 1989.
[20] Beata Padlewska and Agata Darmochwal. Topological spaces and continuous functions. Journal of Formalized Mathematics, 1, 1989.
[21] Piotr Rudnicki and Andrzej Trybulec. Abian's fixed point theorem. Journal of Formalized Mathematics, 9, 1997.
[22] Andrzej Trybulec. Tarski Grothendieck set theory. Journal of Formalized Mathematics, Axiomatics, 1989.
[23] Andrzej Trybulec. Left and right component of the complement of a special closed curve. Journal of Formalized Mathematics, 7, 1995.
[24] Wojciech A. Trybulec. Pigeon hole principle. Journal of Formalized Mathematics, 2, 1990.
[25] Zinaida Trybulec. Properties of subsets. Journal of Formalized Mathematics, 1, 1989.
[26] Edmund Woronowicz. Relations and their basic properties. Journal of Formalized Mathematics, 1, 1989.

Received May 27, 2002


[ Download a postscript version, MML identifier index, Mizar home page]