Logic Symbols

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Across
  1. 2. If and only if (iff)
  2. 5. '&' symbol
  3. 7. caret in this symbol 'vVV'
  4. 8. Large marsupial
  5. 10. '+' symbol
  6. 11. '∵' symbol
  7. 13. '!' symbol
Down
  1. 1. A line with this symbol'|'
  2. 3. '∴' symbol
  3. 4. '^' symbol
  4. 6. Exclusive or -xor
  5. 9. '~' symbol
  6. 11. Used to indicate negation.
  7. 12. 'x' symbol
  8. 14. '•' symbol