Booth Id:
MATH018
Category:
Mathematics
Year:
2019
Finalist Names:
Akinshin, Stepan (School: Moscow South-Eastern School Named After V. I. Chuikov)
Abstract:
Purpose:
The problem of finding the shortest path between the two given points is a classical problem in geometry. These paths are called geodesic lines. The existence of non-self-intersecting closed geodesics is special interest. Nowadays people are able to find all possible closed geodesics on some smooth surfaces, such as a sphere, and on regular polyhedra.
I studied geodesic lines on Archimedean solids, which are the most similar in properties to regular polyhedra. I proposed a hypothesis that every Archimedean solid has a closed geodesics.
Procedure:
In research I used a polyhedron’s net. I searched for two edges on the net, which coincide on polyhedron. Then I looked for two points with the similar property. Line which connects that points is geodesic.
Results:
1) I found some classes of closed geodesic lines on all Archimedean solids;
2) The hypothesis about geodesics on Archimedean solids was proved and I formulate a theorem:
"All Archimedean solids have at least 1 geodesic line."
Conclusion:
This research showed which classes of closed non-self-intersecting geodesic lines exist on Archimedean solids. In future I plan to study other polyhedra, such as Catalan and Johnson solids.
Awards Won:
American Mathematical Society: Certificate of Honorable Mention