Abstract
We define and investigate Heyting-valued interpretations for Constructive Zermelo–Frankel set theory (CZF). These interpretations provide models for CZF that are analogous to Boolean-valued models for ZF and to Heyting-valued models for IZF. Heyting-valued interpretations are defined here using set-generated frames and formal topologies. As applications of Heyting-valued interpretations, we present a relative consistency result and an independence proof.
Original language | English |
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Pages (from-to) | 164-188 |
Number of pages | 25 |
Journal | Annals of Pure and Applied Logic |
Volume | 137 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - Jan 2006 |
Keywords
- Constructive set theory
- Formal topology
- Pointfree topology
- Heyting algebra
- Frame
- Heyting-valued models