LINEAR ALGEBRA

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Across
  1. 2. { }
  2. 7. (a,b)
  3. 9. ≡
  4. 10. ⌊x⌋
Down
  1. 1. ( )
  2. 3. ∑
  3. 4. ∞
  4. 5. ratio φ
  5. 6. | x |
  6. 8. ∆