<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Sat, Aug 22, 2015 at 10:29 PM, Barry Smith <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov" target="_blank">bsmith@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
David,<br>
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Currently the only way to do this without adding a lot of additional PETSc code is to add additional variables such that only box constraints appear in the final problem. For example say you have constraints c <= Ax <= d then introduce new variables y = Ax and then you have the larger problem of unknowns (x,y) and box constrains on y with -infinity and +infinity constraints on x.<br></blockquote><div><br></div><div><br></div><div>OK, that makes sense, thanks for the info!</div><div><br></div><div>David</div><div><br></div></div></div><div class="gmail_extra"><br></div></div>