EN
By a general Franklin system corresponding to a dense sequence 𝓣 = (tₙ, n ≥ 0) of points in [0,1] we mean a sequence of orthonormal piecewise linear functions with knots 𝓣, that is, the nth function of the system has knots t₀, ..., tₙ. The main result of this paper is that each general Franklin system is an unconditional basis in $L^{p}[0,1]$, 1 < p < ∞.