Geometric Orchestra

Spring 2025: The notes from rehersals (hand-written notes in Russian):

• 1. Numerological warm-ups
• 2. Chromatic number of the plane
• 3. On Kangaroo... (Chromatic number of the circle)

Resources:

• 1. 343867 and Tetrahedral Numbers Numberphile video with James Grime
• 2. Chromatic numbers Andrey Raygorodsky (Notes of Lecture for school students, in Russian)
• 3. Kangaroo Question (a poem by myself, in Russian)

Standard Geometry Textbook:

• Geometry textbook by O. V. Pogorelov: in Ukranian and in Russian.

Links to 2022-24 pages:
        Japanese Temple Geometry
        Geometry Around us
        How to Solve it - and - Geometry in Figures
        Mathematics and Art

The webpage uses the following paintings:
    Left: Georges Braques, "Musical Forms", 1918.
    Right: Pablo Picasso, "Guitar", 1913.