In order to estimate local truncation errors of the Adams-Bashforth-Moulton palr of order p (p--2, 3, 4, 5) in the mode of correcting to convergence, in the P(EC)mE mode and in the P(EC) m mode, we consideran accurate method by using a linear combination of the differences between the values of the predictor and those of the corrector. As one application, we also considera method for estimating global truncation errors by using the estimated local truncation errors.

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