# ZF and weakly inaccessible cardinals

This question should probably have been asked 3 years ago (perhaps it has and was removed for some reason?)

In 2011, Alexander Kiselev claimed to have proved in ZF that there are no weakly inaccessible cardinals. He posted two long papers on the arXiv (see here : http://logiciansdoitwithmodels.com/2011/08/17/fom-posting-on-a-kiselevs-claim-that-there-are-no-weakly-inaccessible-cardinals-in-zf/. There were a few reactions in 2011, e.g. this one : http://www.cs.nyu.edu/pipermail/fom/2011-August/015698.html

• My exact Google search was Kiselev inaccessible, and that post was the 9th item on the list. May 14, 2015 at 16:39