LOGIC SYMBOLS

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Across
  1. 3. ∃
  2. 6. + EXAMPLE: x+y
  3. 9. ! EXAMPLE: !x
  4. 11. & EXAMPLE: x&y
  5. 12. ∀
  6. 13. ⇔
  7. 15. ^
Down
  1. 1. x'
  2. 2. ¬
  3. 4. ↔ if and only if (iff)
  4. 5. ⊕ exclusive or - xor
  5. 7. negation ~
  6. 8. ⇒
  7. 10. ⋅ EXAMPLE: x⋅y
  8. 14. ∴