LOGIC SYMBOLS

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Across
  1. 3. if and only if(iff)
  2. 4. .
  3. 6. not-negative
  4. 7. ~
  5. 10. not-negative
  6. 12. or
  7. 13. exclusive
  8. 14. &
Down
  1. 1. three dots
  2. 2. |
  3. 5. not-negative
  4. 8. if and only if(iff)
  5. 9. +
  6. 11. and