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The present note will present a different and direct way to generalize the convexity while keep the classical results for L1-convergence still alive.

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    Zygmund, A., Trigonometric Series, Cambridge Univ. Press, Cambridge, 1977.

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  • Impact Factor (2019): 0.486
  • Scimago Journal Rank (2019): 0.234
  • SJR Hirsch-Index (2019): 23
  • SJR Quartile Score (2019): Q3 Mathematics (miscellaneous)
  • Impact Factor (2018): 0.309
  • Scimago Journal Rank (2018): 0.253
  • SJR Hirsch-Index (2018): 21
  • SJR Quartile Score (2018): Q3 Mathematics (miscellaneous)

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  • Biró, András (Number theory)
  • Csáki, Endre (Probability theory and stochastic processes, Statistics)
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