Method description

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We see that the mathematical input data for an A-method are the foloowings:

• the provenience of the method (it is a test method or a known method; in the last case is indicated to make some bibliographical references);

• the method variable Y_n, namely his components;

• the method equations;

• if the method is of multistep type, a starting procedure for the first steps;

• if the method is of implicit type, a nonlinear equation solving procedure must be defined;

• if the method is of multivalue type, the component of Y_n which approximates the exact solution must be specified;