Mathematics, 05.05.2020 06:00, chris1848
Consider a set A = {a1, . . . , an} and a collection B1, . . . , Bm of subsets of A (i. e. Bi ⊆ A for each i.) We say that a set H ⊆ A is a hitting set for the collection B1, . . . , Bm if H contains at least one element from each Bi - that is, if H T Bi is not empty for each i (so H hits all the sets Bi .) We now define the hitting set problem as follows. We are given a set A = {a1, . . . , an}, a collection B1, . . . , Bm of subsets of A, and a number k. We are asked: Is there a hitting set H ⊆ A for B1, . . . , Bm so that the size of H is at most k? Prove that hitting set is NP-complete.
Answers: 3
Mathematics, 21.06.2019 19:30, tyeni2crazylolp7a3hk
If chord ab is congruent to chord cd, then what must be true about ef and eg?
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Mathematics, 21.06.2019 21:30, kyandrewilliams1
Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price
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Mathematics, 21.06.2019 23:00, slonekaitlyn01
Shared decision making is always a positive strategy to take
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Consider a set A = {a1, . . . , an} and a collection B1, . . . , Bm of subsets of A (i. e. Bi ⊆ A fo...
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