Partial ordering & Binary

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Across
  1. 5. if it is antisymmeric
  2. 7. set of real numbers
  3. 8. shifting operation
  4. 9. a two base system
Down
  1. 1. elements of a and b
  2. 2. partially ordered set
  3. 3. 10 decimal system
  4. 4. arithmetic subtraction
  5. 6. s are comparable