MATHEMATICAL CROSSWORD PUZZLE

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12345678910111213141516
Across
  1. 1. ζ letter
  2. 5. ^ symbol
  3. 8. Rank of matrix A
  4. 9. 1 turn = 360°
  5. 10. Multiplication
  6. 11. Form by two rays
  7. 13. LXXX
  8. 16. XVII
Down
  1. 2. ~ symbol
  2. 3. Set of all possible values
  3. 4. λ letter
  4. 6. ω letter
  5. 7. Decimal separator
  6. 12. Division
  7. 14. Infinite line
  8. 15. A collection of elements