The length-selection solver (length_selection.py)

Analytic selected wavenumber k_★=√ε/2σ and a 2D Swift–Hohenberg integrator (IF-RK2) confirming that the saturated nonlinear pattern locks onto k_★ and reproduces the one-half exponent of Proposition §8. Full source is shipped as length_selection.py.

)} Analytic selected wavenumber k_★=√ε/2σ and a 2D Swift–Hohenberg integrator (IF-RK2) confirming that the saturated nonlinear pattern locks onto k_★ and reproduces the one-half exponent of Proposition §8. Full source is shipped as length_selection.py.

)} Analytic selected wavenumber $k_\star=\sqrt{\varepsilon/2\sigma}$ and a 2D Swift–Hohenberg integrator (IF-RK2) confirming that the saturated nonlinear pattern locks onto $k_\star$ and reproduces the one-half exponent of Proposition §8. Full source is shipped as length_selection.py.