English

A $j$-translation with Kripke forcing relation

Logic 2026-03-23 v2 Category Theory

Abstract

In this paper, we introduce a translation that combines the jj-translation with Kripke forcing in the internal logic of an elementary topos. First, we show that our translation is sound for intuitionistic first-order logic and Heyting arithmetic. Furthermore, its interpretation in the effective topos provides an extension of the sheaf model of realizability introduced by de Jongh and Goodman. As an application, we systematically investigate translations for semi-classical axioms. Based on this investigation, we establish a separation result on semi-classical arithmetics, which cannot be obtained using the usual jj-realizability.

Keywords

Cite

@article{arxiv.2602.23218,
  title  = {A $j$-translation with Kripke forcing relation},
  author = {Satoshi Nakata},
  journal= {arXiv preprint arXiv:2602.23218},
  year   = {2026}
}

Comments

v2: Remark 6.22 corrected, other minor revisions

R2 v1 2026-07-01T10:54:12.955Z