On contra continuous functions in topological spaces

العناوين الأخرى

حول الدوال المتصلة المضادة

مقدم أطروحة جامعية

al-Fayyumi, Hanadi Anwar Muhammad

مشرف أطروحة جامعية

al-Mabhuh, Ahmad Abd al-Rauf

أعضاء اللجنة

Asad, Asad Yusuf
Safi, Ziyad Rizq

الجامعة

الجامعة الإسلامية

الكلية

كلية العلوم

القسم الأكاديمي

قسم الرياضيات

دولة الجامعة

فلسطين (قطاع غزة)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2015

الملخص الإنجليزي

In this thesis, we study contra continuous functions in topological spaces.

We show that A function f : X ! Y is contra continuous i for each point x 2 X and each lter base in X convergent to x, the lter base f() is c-convergent to f(x).

Next, we introduce two independent classes of closed sets called tgr-closed sets and tgr-closed sets.

We show that the class of tgr-closed sets contains all dense sets and regular closed sets and is contained in the class of rg-closed sets and rwg-closed sets.

Also, we show that the class of tgr-closed sets contains all regular closed sets and is contained in the class of gr-closed sets and swg-closed sets.

We show that these two classes are the same in a locally indiscrete space.

Also, we study the topology generated by tgr-closed sets and show that the generated topology is contained in the space if and only if (X; ) is tgr-locally indiscrete.

Finally, we introduce and study new classes of contra continuous functions called contra tgr-continuous functions and contra tgr-closed sets.

التخصصات الرئيسية

الرياضيات

الموضوعات

عدد الصفحات

76

قائمة المحتويات

Table of contents.

Abstract.

Introduction.

Chapter One : Preliminaries.

Chapter Two : Contra continuous functions.

Chapter Three : New classes of generalized closed sets in topological spaces.

Chapter Four : New classes of contra continuous functions.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

al-Fayyumi, Hanadi Anwar Muhammad. (2015). On contra continuous functions in topological spaces. (Master's theses Theses and Dissertations Master). Islamic University, Palestine (Gaza Strip)
https://search.emarefa.net/detail/BIM-611026

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

al-Fayyumi, Hanadi Anwar Muhammad. On contra continuous functions in topological spaces. (Master's theses Theses and Dissertations Master). Islamic University. (2015).
https://search.emarefa.net/detail/BIM-611026

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

al-Fayyumi, Hanadi Anwar Muhammad. (2015). On contra continuous functions in topological spaces. (Master's theses Theses and Dissertations Master). Islamic University, Palestine (Gaza Strip)
https://search.emarefa.net/detail/BIM-611026

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-611026