Let R = {(a, a),(a, b), (b, b),(a, c), (c, c)} be a partial order relation on Σ= {a,b,c}. Let ≤ be the corresponding lexicographic order on Σ, the set of all finite strings over Σ. Which of the following is true? Select one: O a. abbac ≤ abbab O b. abbac ≤ abbaac O c. bc ba O d. O e. abbaaacc = abbaab abbacs abb

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let R = {(a, a),(a, b), (b, b),(a, c), (c, c)} be a partial order relation on
Σ= {a,b,c}. Let ≤ be the corresponding lexicographic order on Σ, the set of all
finite strings over Σ. Which of the following is true?
Select one:
O a. abbac ≤ abbab
O b. abbac ≤ abbaac
O c. bc ba
O d. abbaaacc ≤ abbaab
O e.
abbacs abb
Transcribed Image Text:Let R = {(a, a),(a, b), (b, b),(a, c), (c, c)} be a partial order relation on Σ= {a,b,c}. Let ≤ be the corresponding lexicographic order on Σ, the set of all finite strings over Σ. Which of the following is true? Select one: O a. abbac ≤ abbab O b. abbac ≤ abbaac O c. bc ba O d. abbaaacc ≤ abbaab O e. abbacs abb
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