Advanced properties of circles (power of a point, radical axis). Geometric transformations (homothety, inversion). Vector methods and barycentric coordinates. : Graph theory (Eulerian paths, planar graphs). The Pigeonhole Principle (advanced applications). Invariants and semi-invariants in game theory. Instructional Methods

: Shifting from rote calculation to constructing rigorous proofs and logical chains.

: Mastering techniques required for the All-Russian Olympiad of Schoolchildren and other "Level I" university-hosted competitions.

: Provides archived programs and problem sets from legendary circles.

A typical 9th-grade program balances advanced algebra, geometry, and discrete mathematics: : Polynomials and Vieta's formulas for higher degrees. Modular arithmetic and Diophantine equations. Complex inequalities (Cauchy-Schwarz, AM-GM). Geometry :