Interface ThreeTermRecurrenceCalculatable

All Known Implementing Classes:
RecurrenceAB, RecurrenceABWithMultiplicationCached

public interface ThreeTermRecurrenceCalculatable
Three term recurrence coefficients. The definitions as in Walter Gautschi, "Orthogonal Polynomials:Computation and approximation", page 12. Here a[k]=sqrt(beta_k) and b[k]=alfa_k; the recurrence is the same as in RecurrenceAB#getConfederateMatrix: \[ x*p_{k}=a_{k+1}p_{k+1}+b_{k}p_{k}+a_{k}p_{k-1} \]