Monotone conservative scheme (source code)

= Monotone conservative scheme

A scalar finite-volume update is monotone if increasing any input state cannot decrease any output state. A consistent conservative update preserves constants and has an invariant interval by comparison. On a periodic grid, or an infinite grid with summable perturbations, conservation and monotonicity imply <L1 contraction of a monotone conservative scheme>. Translation invariance then implies the <total variation diminishing scheme> property.