This is one of two articles that came out of my dissertation (also titled The Ground Axiom).
The Ground Axiom
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Dissertation: The Ground Axiom
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Unforcing and the Ground Axiom My interest in “unforcing,” somehow working backwards from a forcing extension to a ground model, started early in my set theory studies. When I went through the rite of passage of learning Paul Cohen’s forcing – an exercise in induction, with a lovely (and at the time, frustratingly opaque) back-and-forth between technical details and...
Generalized Cohen Iterations
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Set Theory Seminar (RESCHEDULED from April 12)CUNY Graduate Center, Room 6417Friday, May 17, 10:00-11:45am, 2019Jonas Reitz, CUNYGeneralized Cohen Iterations Adding Cohen subsets to each of a class of cardinals in turn is a common construction in set theory, and underlies many fundamental results. The construction comes in two basic flavors, products (as in Easton’s Theorem on the powers of...
