# Recent writing

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**Comments for Joel David Hamkins** Comment on Upward countable closure in the generic multiverse of forcing to add a Cohen real by Upward closure and amalgamation in the generic multiverse of a countable model of set theory | Joel David Hamkins
**Comments for Joel David Hamkins** Comment on An introduction to Boolean ultrapowers, Bonn, 2011 by Upward closure and amalgamation in the generic multiverse of a countable model of set theory | Joel David Hamkins
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology as a foundation of mathematics, Logic and Metaphysics Workshop, CUNY, October 2016 by Joel David Hamkins
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology as a foundation of mathematics, Logic and Metaphysics Workshop, CUNY, October 2016 by Alice
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology as a foundation of mathematics, Logic and Metaphysics Workshop, CUNY, October 2016 by Joel David Hamkins
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology as a foundation of mathematics, Logic and Metaphysics Workshop, CUNY, October 2016 by Alice
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology by Joel David Hamkins
**Comments for Joel David Hamkins** Comment on Set-theoretic mereology by Andrej Bauer
**Comments for Joel David Hamkins** Comment on The hierarchy of logical expressivity by Joel David Hamkins
**Comments for Joel David Hamkins** Comment on The hierarchy of logical expressivity by Joseph Van Name

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