2 papers
math.MG2023
Linear Families of Triangles and Orthology
Egor Bakaev, Pavel Kozhevnikov
Two triangles are called orthologic if the perpendiculars from the vertices of one of them to the sides of the other are concurrent. In this paper, we explore the concept of orthol…
math.HO2019
Elements of mathematics in problems. Through olympiads and circles to profession
M. Berstein, A. Blinkov, V. Bragin +14
This is a collection of teaching materials used in several Russian universities, schools, and mathematical circles. Most problems are chosen in such a way that in the course of the…