DLVO: Π(D=λ_D) = 64·k_B·T·c·γ²·exp(-1); ln[Π(D)/Π(2D)] = D/λ_D

Sympy-exact symbolic witness of the DLVO linearised-PB double-layer pressure at the Debye-length anchor plus the log-slope fingerprint. Setup: Π(D) = 64·k_B·T·c·γ²·exp(-D/λ_D) as a sympy expression with D, λ_D, c, γ, k_B, T all positive…