# Recent writing

**Joel David Hamkins**On set-theoretic mereology as a foundation of mathematics, Oxford Phil Math seminar, October 2018**Joel David Hamkins**Parallels in universality between the universal algorithm and the universal finite set, Oxford Math Logic Seminar, October 2018**Joel David Hamkins**The rearrangement number: how many rearrangements of a series suffice to validate absolute convergence? Warwick Mathematics Colloquium, October 2018**Victoria Gitman**The Stable Core**Joel David Hamkins**The propagation of error in classical geometry constructions**Joel David Hamkins**Draw an infinite chessboard in perspective, using straightedge only**Joel David Hamkins**Draw a chessboard in perspective view, using straightedge only**Asaf Karagila**Five Star Theorems**Sandra Müller**UMI-SIMAI-PTM, Wroclaw - Large Cardinals in the Stable Core**Sandra Müller**CUNY Set Theory Seminar - How to obtain Woodin cardinals from the determinacy of long games