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richardzach.org
| | www.arsmathematica.net
5.8 parsecs away

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| | www.logicmatters.net
4.0 parsecs away

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| | "Our external physical reality is a mathematical structure." That's how Wikipedia sums up the cosmologist Max Tegmark's mathematical universe hypothesis. Looks as if some conceptual untangling is needed. Scott Aaronson makes a great start in a wonderful blogpost here.
| | jdh.hamkins.org
5.1 parsecs away

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| | This will be a talk for the Notre Dame Logic Seminar on 6 February 2024, 2:00 pm. Abstract. The principle of covering reflection holds of a cardinal $\kappa$ if for every structure $B$ in a countab...
| | wandrinlloyd.blogspot.com
17.9 parsecs away

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| Wandrin in the Redwoods From the Wandrin Archives 2007