This comment on the n-Category Café says that ZF can be axiomatized using reflection, $\Delta_0$-specification, foundation, and extension. Which form of reflection is needed, exactly? And is there a reference in the literature for this statement (preferably with page number)?
2026-04-03 04:57:47.1775192267
ZF can be axiomatized with reflection, $\Delta_0$-specification, foundation, and extension?
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