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<p class="tableheader">YALMIP 3 [R20050920]</p>
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<div>
Added a <a href="extoperators.htm">nonlinear operator</a>
to overload the concave function <code>geomean</code> (replaces <code>geomean2</code>). See <a href="ellipsoidal.htm">Determinant maximization</a> for a
description.</div>
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<div>
Added a <a href="extoperators.htm">nonlinear operator</a>
to overload the concave function <code>sqrt</code>. Do NOT use
this command in problems you intend to solve the problem using geometric
programming or a non-conic solver.</div>
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Added a <a href="extoperators.htm">nonlinear operator</a>
<a href="reference.htm#pwf">pwf</a>
to model piece-wise functions (experimental functionality serving as a good example of advanced use
of nonlinear operators.)</div>
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Multiple solvers can now be specified in
<a href="reference.htm#sdpsettings_solver">sdpsettings</a>.</div>
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<div>
Cleaned up the engine behind the convexity analysis of <a href="extoperators.htm">nonlinear operators</a>
(Should be more robust and less conservative, but might be a bit
slower now. Please report any performance issues.)</div>
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<div>The function <code>detinv</code> has been removed (use
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<div>Changed format for specification of <a href="extoperators.htm">nonlinear operators</a>.
If you have created your own, make sure to update it according
to the <a href="extoperators.htm#operatorformat">tracenorm
example</a> (second output needs to be changed)</div>
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<p class="tableheader">YALMIP 3 [R20050915]</p>
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<div>
Resolved a bug introduced in <b>R20050720</b> causing symmetry
reduction of sum of squares problem to be skipped in some cases.</div>
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<div>
Resolved a bug which caused <code>x'*x</code> to act as <code>x.'*x</code> on complex valued column-vectors x.</div>
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<p class="tableheader">YALMIP 3 [R20050720]</p>
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<div>
<a href="moment.htm">solvemoment</a> now returns the
associated sum-of-squares decomposition in the fourth output
argument.</div>
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<div>
Low-rank
<a href="sos.htm#lowrank">sum of squares</a> decompositions
can now be computed by using the solver <a href="solvers.htm#LMIRANK">LMIRANK</a>.</div>
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<div>
Small changes to the command
<a href="reference.htm#export">export</a>
(you can now export the internal YALMIP model.)</div>
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<div>
The <a href="extoperators.htm">nonlinear operator</a>
<b>abs</b> now works with complex-valued arguments.</div>
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Small fixes related to the
<a href="geometric.htm">geometric programming</a> support.</div>
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<p class="tableheader">YALMIP 3 [R20050620]</p>
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<div>
Fixed a rather serious bug affecting
<a href="reference.htm#double">double</a>
on nonlinear variables (bug introduced in <b>R20050617</b> release).</div>
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<p class="tableheader">YALMIP 3 [R20050617]</p>
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<div>
Added support for <a href="impexp.htm">loading models</a> in
<a target="_blank" href="http://infohost.nmt.edu/~sdplib/FORMAT">
sparse SDPA ASCII format</a>.</div>
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<div>
Added the function <a href="reference.htm#unblkdiag">unblkdiag</a>
to automatically detect and convert block diagonal
semidefiniteness constraints.</div>
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<div>
Added the function <a href="reference.htm#dissect">dissect</a>
to automatically transform large sparse structured
semidefiniteness constraints to smaller block diagonal
constraints by introducing additional variables.</div>
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The experimental cutting plane solver for mixed integer SDP is now
somewhat official.
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