The next meeting of the Joint Seminar of Analysis, Geometry and Topology Department will be held on May 12, 2015 at 14:00 in Room 478 of IMI.

A talk on:

On the Trisection of an Angle – seriously speaking!

will be delivered by Georgi Dimkov and Dessislava Dimkova.

Everybody is invited.

Abstract. More than 20 centuries ago ancient mathematicians ascertained that the following three problems: doubling the cube, trisecting the angle and squaring the circle cannot be solved using compass and straightedge. More precisely speaking: the compass can be opened arbitrarily wide, but there are no markings on it, the straightedge is infinitely long, but it has no markings on it and has only one straight edge, unlike ordinary rulers. The ancient Greek mathematicians tried to find different tools to solve the problems. So appeared the ideas for “improving” of usual instruments, going out of the constructions of straight lines and circle, construction of new instruments. The talk aims to present the development of the ideas as well as their realizations.