- harmonic logarithm
- harmonic majorant
- harmonic majorant function
- harmonic manifold
- harmonic mapping (= harmonic map)
- harmonic mean
- harmonic mean index
- harmonic measure
- harmonic minorant
- harmonic minorant function
- harmonic morphism
- harmonic number
- harmonic operator
- harmonic oscillation
- harmonic oscillator
- harmonic parameter
- harmonic pencil
- harmonic perspectivity
- harmonic polar
- harmonic polar curve
- harmonic polar line
- harmonic pole
- harmonic polynomial
- harmonic position
- harmonic progression