Tridiagonal matrix: Difference between revisions

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where <math>b_i \neq c_i </math>.
 
Assume that theeach product of off-diagonal entries is ''strictly'' positive <math>b_i c_i > 0 </math> and define a transformation matrix <math>D</math> by
:<math>
D := \operatorname{diag}(\delta_1 , \dots, \delta_n)