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<p>Hi,</p>
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<p>in the list of changes to SLEPc version 3.8, it is stated that there is a preliminary implementation of polynomial filtering using STFILTER.
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<p>Because I am struggling to obtain interior eigenvalues and harmonic extraction seems not to be stable enough in my case, I wanted to give it a try, but I could not find any documentation yet.</p>
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<p>Does anybody have an example of how to use STFILTER or any documentation about it?</p>
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<p>Thanks in advance,<br>
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<p>Moritz<br>
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