1.

 Principle of duality is defined as

A. all properties are unaltered when  ≤ is replaced by ≥ other than 0 and 1 element.
B. all properties are unaltered when  ≤ is replaced by ≥
C. LUB becomes GLB
D. ≤ is replaced by ≥
Answer» B. all properties are unaltered when  ≤ is replaced by ≥


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