TY - JOUR ID - Wronicz2005 LB - Wronicz2005 AU - Wronicz, Zygmunt TI - On some application of biorthogonal spline systems to integral equations ST - On some application of biorthogonal spline systems to integral equations JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2005 VL - 25 IS - 1 SP - 149 EP - 160 DO - http://dx.doi.org/10.7494/OpMath.2005.25.1.149 UR - http://dx.doi.org/10.7494/OpMath.2005.25.1.149 AB - We consider an operator \(P_N: L_p(I) \to S_n(\Delta_N)\), such that \(P_Nf=f\) for \(f\in S_n(\Delta_N)\), where \(S_n(\Delta_N)\) is the space of splines of degree \(n\) with respect to a given partition \(\Delta_N\) of the interval \(I\). This operator is defined by means of a system of step functions biorthogonal to \(B\)-splines. Then we use this operator to approximation to the solution of the Fredholm integral equation of the second kind. Convergence rates for the approximation of the solution of this equation are given. KW - operator associated with step functions KW - \(B\)-splines KW - integral equation KW - approximation SN - 1232-9274 ER -