Flatness

Flatness may refer to:

• Flatness (art)
• Flatness (cosmology)
• Flatness (liquids)
• Flatness (manufacturing), a geometrical tolerance required in certain manufacturing situations
• Flatness (systems theory), a property of nonlinear dynamic systems
• Spectral flatness
• Flat intonation
• Flat module in abstract algebra
• Flat morphism in algebraic geometry

• Flat (disambiguation)
• Flattening