Matt introduced this concept, he says the IS is a better place to attach things.<div><br></div><div><a href="http://petsc.cs.iit.edu/petsc/petsc-dev/rev/2ad289ac99e0">http://petsc.cs.iit.edu/petsc/petsc-dev/rev/2ad289ac99e0</a></div>
<div><br></div><div>I don&#39;t understand why the IS is better (because it&#39;s mostly immutable?). I&#39;m worried that putting it there is going to be fragile because the near null space is not a property of an IS at all.</div>