Department of Mathematics

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Department of Mathematics has more than 42 academic staff members

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Mr. Khadiga Abd ulati Abdulsalam Ben mussa

Kbenmussa هي احد اعضاء هيئة التدريس بقسم الرياضيات بكلية العلوم. تعمل السيدة Kbenmussa بجامعة طرابلس كـمحاضر مساعد

Publications

Some of publications in Department of Mathematics

Order Structures of One-point Extensions of Locally Compact Spaces

Abstract For a locally compact space, we define an order-anti-isomorphism from the set of all one-point extensions of onto the set of all nonempty closed subsets of . We consider various sets of one-point extensions, including the set of all one-point locally compact extensions of , the set of all one-point Lindelöf extensions of , the set of all one-point pseudocompact extensions of , and the set of all one-point Cech-complete extensions of , among others. We study how these sets of one-point extensions are related, and investigate the relationship between their order structure, and the topology of subspaces of , we also study the relationship between various subsets of one-point extensions, the existence of minimal and maximal elements in various sets of one point extensions, and we show how some of our results may be applied to obtain relations between the order structure of certain subfamilies of ideals of partially ordered with inclusion, and the topology of subspaces of .
مسعودة سعد نجم (2009)
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Fibonacci Numbers and some of their Applications in Science and Engineering

يهتم هذا البحث بأعداد فيبوناتشي وإبراز الدور المهم الذي تلعبه في شتى التطبيقات وخاصة في تطبيقات العلوم والهندسة. ويتناول بالتحديد مقدمة في نطرية الاعداد ونبذة عن حياة العالم الايطالي فيبوناتشي وعن بعض نشاطاته العلمية في الرياضيات وتطبيقات اعداد فيبوناتشي وخواصها وبعض النظريات ذات الصلة ويتناول البحث كذلك النسبة الذهبية وخواصها وهندسة فيبوناتشي وعلاقة اعداد فيبوناتشي بأعداد لوكاس ومصفوفات فيبوناتشي. Abstract This research deals with Fibonacci numbers and its vast application in different areas, especially in science and engineering. In particular it presents an introduction to number theory and a brief presentation of Fibonacci life and carrier showing the admirable achievement he contributed. It also talks about the application, properties of Fibonacci numbers and related theorems. The Golden Ratio, its properties and appearance in several aspects of science and culture also discussed, Fibonacci's Geometry, Matrices and the relation between Fibonacci numbers and Lucas numbers are all investigated.
أمال مفتاح فرحات (2015)
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Zero Sum GamesSolutions and Applications

عندما تواجهنا مشكلة صنع القرار في ظل ظروف تنافسية تتسم بتناقص مواقف المتنافسين وتعارض المصالح فيما بينهم، فإن عملية اتخاذ القرار تصبح صعبة في مثل هذه الظروف لان نتائج القرار وأثره لا تعتمد على القرار المتخذ فقط، بل تتأثر بنتائج القرارات التي يتخذها المتنافسون. وتصبح المشكلة هي اتخاذ قرار يتعلق بالمصالح المتعارضة وحل مثل هذا التعارض هو محور اهتمام نظرية الألعاب حيث تساعد نظرية الألعاب في فهم إستراتيجيات المتنافسين وتحليل احتمالاتها المختلفة واتخاذ القرار المناسب لمقابلة المواقف المختلفة للخصم. ونحن سوف نقتصر على مايسمى (ألعاب المجموع الصفري لشخصين) حيث قدم هذا البحث طرق حل الألعاب ذات المجموع الصفري لشخصين وذلك بتحديد أفضل إستراتيجية لكل متنافس وتناولت الدراسة كذلك حل ألعاب المجموع الصفري باستخدام البرمجة الخطية وقمنا بإعداد برنامج لها بلغة الفوتران للاستفادة منه لحل الألعاب ذات الحجم الكبير التي تتطلب كثير من الجهد والحسابات والوقت. كما تتم التركيز على الشكل الموسع للألعاب وقمنا بمعالجة مجموعة من الألعاب بواسطة شجرة اللعب. كما تم توضيح الصلة بين الشكل الإستراتيجي والشكل الموسع للعبة. Abstract When we encounter the problem of decision making under competent circumstances shaped with the contradiction of players positions and the contradictions of interrelated interests, the decision making process becomes difficult under such circumstances, because the decision outcome and its affect is not dependent of the said decision, instead, they are affected by the results of the decisions taken by the players. Then the problem is in taking a decision relevant to those contradicted interests and how to solve such contradictions is the basic interest of the games theory. The games theory helps in understanding the strategies of the players and analyzing the strategies various possibilities and thus arriving at the proper decision to deal with the different positions of the other player. We shall restrict our work on to what so called (two-person zero- sum games). As this research has suggested a solution method for the games of the zero sum for two persons, via determination of the best strategy possible for each player. The study as well dealt with the solution of the zero-sum games using the linear programming. We prepared a program for that end- FORTRAN language in order to benefit from it in solving the games of the bigger size which require much efforts and calculations and time too. Great concentration was also being given to the extensive configuration of the games, where we treated a set of games by means of the play tree. We also attempted to clarify the relation between the strategic form and the extensive form of game.
عواطف أحمد العزابي (2008)
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