Logic Symbol

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Across
  1. 3. symbol name of ⋅
  2. 6. symbol name of !
  3. 7. symbol name of ∀
  4. 8. also known as circled plus ⊕
  5. 9. symbol name of x'
  6. 10. symbol name of ∵
  7. 13. symbol name of ∨
  8. 14. ⇔ or ↔
  9. 15. negation ~
Down
  1. 1. ∃
  2. 2. ∴
  3. 4. symbol name of ¬
  4. 5. symbol name of ⇒
  5. 11. another name of caret
  6. 12. symbol name of &