First-Order Logic

CSC 261 - Artificial Intelligence - Weinman



Answer the following questions. Record your answers in your Reading Journal.
  1. Identify the sentence or short passage that you believe best illustrates1 the relationship between quantifiers and logical connectives (c.f., Table 7.8). Briefly (3-5 sentences) explain why you selected this passage.
  2. Russell and Norvig define the universal quantifier by saying
    ∀ x P is true in a given model if P is true in all possible extended interpretations constructed from the interpretation given in the model, where each extended interpretation specifies a domain element to which x refers. (pp. 295-296)
    Rewrite this definition in your own words and briefly explain what it means to you.
  3. Identify the sentence, section, or concept from the current reading that remains the most confusing to you. Briefly (3-5 sentences) explain what you find confusing about it.

Footnotes:

1Note that to illustrate means to serve as an example of (i.e., the commonality) or to explain or make something clear by use of an example. It does not mean to explain directly.