four-valued-logic tag

Ordered by date created, newest first. All 3 publications are shown on this page.

• What Is a Bilattice? Belnap-Dunn Logic and the Two Orders 2026-10-19 · article
  A bilattice has two lattice orders, one for truth and one for information. It explains why a value meaning both true and false is data, not an error.
• The Nelson Identity on Four-Valued Truth: A Corrected Contrapositive 2026-10-19 · article
  On the four-valued algebra FOUR, naive contrapositive fails but the Nelson identity holds: two iterated implications recover the original one.
• Belnap Four-Valued Logic: Reasoning with Gaps and Gluts 2026-07-08 · paper
  Belnap-Dunn logic gives each claim one of four statuses: true only, false only, both, or neither. It lets a machine reason on conflicting data.

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