The evaluation `Θ` of the child power series, composed with the chart substitution `s`, agrees with the canonical map from `O[[T,X]]` through the chart to its completion at `P`.

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The evaluation `Θ` of the child power series, composed with the chart substitution `s`, agrees with the canonical map from `O[[T,X]]` through the chart to its completion at `P`. · Prove2Me