Mark44
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Why does the last term have a factor of d? Above you set d to 1, so it is just extra baggage here that is likely to confuse someone who isn't reading carefully.Gh. Soleimani said:7. Let consider “A1” as set of Arithmetic Progression where:
d = 1, a1 = 1 and an = a1 + (n - 1) d, n = 1, 2, 3,…..
In this case, we have:
A1 = {a1, (a1+1), (a2 +1),……. (a1 + (n - 1) d)}
Also, the above doesn't make sense to me. Your set includes ##a_1, a_1 + 1##, and then ##a_2 + 1##, which of course is equal to ##a_1 + 2##. Presumably the next term, according to your scheme, would be ##a_3 + 1##, but for your last term you revert to ##a_1 + (n - 1)d##, with d being unnecessary.
With the parameters you chose, your set is ##A_1 = {1, 2, 3, \dots, n - 1}##.
Again, what is the purpose of including d?Gh. Soleimani said:One of permutations of set A1 is to invert members of set A1 as follows:
A2 = {(a1 + (n - 1) d),….,(a2 +1), (a1+1), a1}
How is this different from ##A_1##?Gh. Soleimani said:We can generate many sets which are the periodicity of set A1 just like below cited:
A3 = {a1, (a1+1), (a2 +1),……. (a1 + (n - 1) d)}
How is this different from ##A_2##?Gh. Soleimani said:A4 = {(a1 + (n - 1) d),….,(a2 +1), (a1+1), a1}
Gh. Soleimani said:Finally, we will have set B:
B = {A1, A2, A3, A4, …….An}