Do Merged Mathematical Sequences Converge to the Same Limit?

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SUMMARY

The discussion centers on the convergence of merged mathematical sequences, specifically two series An and Bn. It is established that if the sequences unite from a certain index, the limit of the merged sequence converges if and only if both An and Bn converge to the same limit. The conversation clarifies that independent sequences may not necessarily converge to the same limit, emphasizing the importance of their relationship in determining convergence.

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thres two series An and Bn , Bn unite with An from some index.

need to prove that limAn_k = limBn_m

Bn_m and An_m are sub series .

TNX !
 
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Hi there,
I don't really understand your question. Could you detail it a little more? What exactly is this limit? And what do you mean by "unite with"?
 
Do you mean alternate sequences so we have [itex]a_n, b_n, a_{n+1}, b_{n+1}, ...[/itex] from some n? In any case, you can't prove what you say- {an} and {bn} could be two independent sequences with completely different limits.

What you can prove (assuming that is what you mean by "unite") is that the "united" sequence converges if and only if {an} and {bn} converge to the same thing.
 

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