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The comparison test - Not just for nonnegative series


  • Michele Longo

    () (Università Cattolica del Sacro Cuore)

  • Vincenzo Valori

    () (Dipartimento di Matematica per le Decisioni - Università degli Studi di Firenze)


Consider the following question. Is it possible to generalize the Comparison Test to generic real series? At first glance, many (certainly the authors) could argue something like "If it were true then it certainly would be written in some of the books standing on the shelves in my room." As a matter of fact, all the books on the authors' shelves state the test only for nonnegative series. However, a straightforward generalization of this test is possible and useful to study the convergence of series for which standard tests do not apply as we show in this note.

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  • Michele Longo & Vincenzo Valori, 2003. "The comparison test - Not just for nonnegative series," Working Papers - Mathematical Economics 2003-01, Universita' degli Studi di Firenze, Dipartimento di Scienze per l'Economia e l'Impresa.
  • Handle: RePEc:flo:wpaper:2003-01

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    References listed on IDEAS

    1. Bischi, Gian-Italo & Stefanini, Luciano & Gardini, Laura, 1998. "Synchronization, intermittency and critical curves in a duopoly game," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 44(6), pages 559-585.
    2. Bischi, Gian Italo & Gardini, Laura & Kopel, Michael, 2000. "Analysis of global bifurcations in a market share attraction model," Journal of Economic Dynamics and Control, Elsevier, vol. 24(5-7), pages 855-879, June.
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    comparison test; real series;


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