required to prove that A×∅=∅
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Let A,B and C be subsets of S
required to prove that
A×∅=∅
Step by step
Solved in 2 steps with 2 images
- 2. Prove that is commutative if and only if is commutative.[Type here] 7. Let be the set of all ordered pairs of integers and . Equality, addition, and multiplication are defined as follows: if and only if and in , Given that is a ring, determine whether is commutative and whether has a unity. Justify your decisions. [Type here]Let a,b,c and d be integers such that ab and cd. Prove that acbd.