Delta-rational chord: Difference between revisions

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-which can be plugged back into the error formula to obtain the error. (We multiply the target DR chord by ''x'' in order to compare it to the approximation on the same isodifferential series.) Note that scaling the delta signature does not affect the error, a critical property for a DR error measure.
+which can be plugged back into the error formula to obtain the error. Note that scaling the delta signature does not affect the error, a critical property for a DR error measure.
 The least-squares linear error measure does not form a metric on the set of delta signatures with a fixed number of terms, since it is not symmetric.