Harmonic Price Patterns
Harmonic trading is based on geometry and fractals. The core of this trading practice incorporates the primary ratio and its derivatives (1.618, 0.618, etc.). Harmonic price patterns work as a sign of potential trend retracements. These patterns can be combined and confirm trade ideas deriving from other technical analysis tools.
The best book for understanding harmonic patterns is “Harmonic Trading” by Scott M Carney.
Introduction to Harmonic Patterns