Abel's Test - Abel's Uniform Convergence Test

Abel's Uniform Convergence Test

Abel's uniform convergence test is a criterion for the uniform convergence of a series of functions or an improper integration of functions dependent on parameters. It is related to Abel's test for the convergence of an ordinary series of real numbers, and the proof relies on the same technique of summation by parts.

The test is as follows. Let {gn} be a uniformly bounded sequence of real-valued continuous functions on a set E such that gn+1(x) ≤ gn(x) for all xE and positive integers n, and let {ƒn} be a sequence of real-valued functions such that the series Σƒn(x) converges uniformly on E. Then Σƒn(x)gn(x) converges uniformly on E.

Read more about this topic:  Abel's Test

Famous quotes containing the words uniform and/or test:

    He may be a very nice man. But I haven’t got the time to figure that out. All I know is, he’s got a uniform and a gun and I have to relate to him that way. That’s the only way to relate to him because one of us may have to die.
    James Baldwin (1924–1987)

    Utopias are presented for our inspection as a critique of the human state. If they are to be treated as anything but trivial exercises of the imagination. I suggest there is a simple test we can apply.... We must forget the whole paraphernalia of social description, demonstration, expostulation, approbation, condemnation. We have to say to ourselves, “How would I myself live in this proposed society? How long would it be before I went stark staring mad?”
    William Golding (b. 1911)