On the Craig method convergency for linear algebraic systems

The iterative Craig method permits to solve linear algebraic systems with nonsymmetric (and even rectangular) matrix. The simple form of this method was constracted. The convergention this method was inverstigated on tests. The comparison with the conjugated gradients method was fulfeeld. It occurred that round of errors for the Craig method decelerate essentially iterations convergence, but not prevent from high accuracy achievement (for well conditioned matrixes). The effective criterium is found for iterations truncation.