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correcting some notations #13338

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Feb 7, 2022
Merged

correcting some notations #13338

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4 changes: 2 additions & 2 deletions include/deal.II/lac/solver_cg.h
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Expand Up @@ -71,8 +71,8 @@ class PreconditionIdentity;
* After @p m steps the matrix T_m can be written in terms of the coefficients
* @p alpha and @p beta as the tri-diagonal matrix with diagonal elements
* <tt>1/alpha_0</tt>, <tt>1/alpha_1 + beta_0/alpha_0</tt>, ...,
* <tt>1/alpha_{m-1</tt>+beta_{m-2}/alpha_{m-2}} and off-diagonal elements
* <tt>sqrt(beta_0)/alpha_0</tt>, ..., <tt>sqrt(beta_{m-2</tt>)/alpha_{m-2}}.
* <tt>1/alpha_{m-1}+beta_{m-2}/alpha_{m-2}</tt> and off-diagonal elements
* <tt>sqrt(beta_0)/alpha_0</tt>, ..., <tt>sqrt(beta_{m-2})/alpha_{m-2}</tt>.
* The eigenvalues of this matrix can be computed by postprocessing.
*
* @see Y. Saad: "Iterative methods for Sparse Linear Systems", section 6.7.3
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