diff --git a/FEATURES.md b/FEATURES.md index eb17f2ed97..f6ff74c98c 100644 --- a/FEATURES.md +++ b/FEATURES.md @@ -17,3 +17,5 @@ Fixed bug in presolve when pointers stored in HighsMatrixSlice get invalidated w Primal and dual residual tolerances - applied following IPM or PDLP solution - now documented as options Highs::getCols (Highs::getRows) now runs in linear time if the internal constraint matrix is stored column-wise (row-wise). Added ensureColwise/Rowwise to the Highs class, the C API and highspy so that users can set the internal constraint matrix storage orientation + +When columns and rows are deleted from the incumbent LP after a basic solution has been found, HiGHS no longer invalidates the basis. Now it maintains the basic and nonbasic status of the remaining variables and constraints. When the model is re-solved, this information is used to construct a starting basis. \ No newline at end of file