Crossword of Linear algebra Symbols

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Across
  1. 4. Dim(U)
  2. 6. Double vertical bars
  3. 7. Matrix of numbers
  4. 9. Rank of matrix A
Down
  1. 1. AT
  2. 2. A -1
  3. 3. | A |
  4. 5. Scalar product
  5. 8. Vector product