Recent writing
- Peter Krautzberger Elusive semantics
- Joel David Hamkins When does every definable nonempty set have a definable element?
- Dana C. Ernst My Students’ Favorite Problems from Spring 2017
- Joseph Van Name How cryptocurrencies could incentivize the development of efficient reversible computers and the cryptocurrency market cap reaches 100 billion dollars.
- Joel David Hamkins A model of the generic Vopěnka principle in which the ordinals are not $\Delta_2$-Mahlo
- Joel David Hamkins The universal definition — it can define any mathematical object you like, in the right set-theoretic universe
- Joseph Van Name 2D heat maps and 3D topographical surfaces from endomorphic Laver tables
- Victoria Gitman A model of the generic Vopěnka principle in which the ordinals are not $\Delta_2$-Mahlo
- Peter Krautzberger Carnival of Math No. 146
- Joel David Hamkins The universal algorithm: a new simple proof of Woodin’s theorem
Recent comments
- Comments for Joel David Hamkins Comment on When does every definable nonempty set have a definable element? by Ali Enayat
- Comments for Joel David Hamkins Comment on When does every definable nonempty set have a definable element? by Joel David Hamkins
- Comments for Joel David Hamkins Comment on When does every definable nonempty set have a definable element? by Ali Enayat
- Comments for Joel David Hamkins Comment on When does every definable nonempty set have a definable element? by Joel David Hamkins
- Comments for Joel David Hamkins Comment on When does every definable nonempty set have a definable element? by Ali Enayat
- Comments for Joel David Hamkins Comment on Local properties in set theory by When does every definable nonempty set have a definable element? | Joel David Hamkins
- Comments for Joel David Hamkins Comment on A simple maximality principle by When does every definable nonempty set have a definable element? | Joel David Hamkins
- Comments for Joseph Van Name Comment on How cryptocurrencies could incentivize the development of efficient reversible computers and the cryptocurrency market cap reaches 100 billion dollars. by Joseph Van Name
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- Comments for Joel David Hamkins Comment on The universal definition — it can define any mathematical object you like, in the right set-theoretic universe by Joel David Hamkins