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This is Discrete Mathematics Subject For the rest of this assignment, we'll be working with toy models for First-Order Logic formulas. In each model, the

This is Discrete Mathematics Subject

For the rest of this assignment, we'll be working with toy models for First-Order Logic formulas. In each model, the universe will be some set of letters. Some of the letters will be vowels (A, a, E, e, I, i, . . . ) and some will be consonants (B, b, D, d, F, f, G, g, . . . ) Some will be in uppercase (A, B, D, E, . . . ), and some will be in lowercase (a, b, d, e, . . . ). To avoid confusion, I'll try to avoid letters where it's hard to tell the difference between upper and lowercase, and you should do the same (e.g., don't use C or O or X). Also, for this assignment, we will treat Y as a vowel.

Use the following interpretations for the predicate symbols. V (x): x is a vowel. L(x): x is lowercase.

Using the same definitions as above, translate the following English sentences into formulas of First-Order Logic. (a) Every vowel is lowercase. (b) Some lowercase letter is a vowel. (c) All of the letters are lowercase vowels.

Using the same definitions as above, translate the following First-Order Logic formulas into natural-sounding English sentences. (In particular, you may not use variables in your answers.)

image text in transcribed

|(x) AXE V (2) TXE ((c)4 V (c)T)TE ((x)TV (2) A) XA ((x)A + (x)])

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