Lesson plan

Modal depth

In modal logic, the modal depth of a formula is the deepest nesting of modal operators (commonly \Box and \Diamond ). Modal formulas without modal operators have a modal depth of zero.

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Article summary

In modal logic, the modal depth of a formula is the deepest nesting of modal operators (commonly \Box and \Diamond ). Modal formulas without modal operators have a modal depth of zero.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.