On the absolute negative summability of double Fourier series.
Sharma, P. L.
Bollettino dell'Unione Matematica Italiana, Tome 16 (1961), p. 408-411 / Harvested from Biblioteca Digitale Italiana di Matematica
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Publié le : 1961-12-01
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     author = {P. L. Sharma},
     title = {On the absolute negative summability of double Fourier series.},
     journal = {Bollettino dell'Unione Matematica Italiana},
     volume = {16},
     year = {1961},
     pages = {408-411},
     zbl = {0104.28903},
     mrnumber = {141946},
     language = {en},
     url = {http://dml.mathdoc.fr/item/BUMI_1961_3_16_4_408_0}
}

Sharma, P. L. On the absolute negative summability of double Fourier series.. Bollettino dell'Unione Matematica Italiana, Tome 16 (1961) pp. 408-411. http://gdmltest.u-ga.fr/item/BUMI_1961_3_16_4_408_0/

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[3] Zãk, I. E.On absolute convergence of double Fourier series, «Soobsceniya Akad. Nauk, Gruzin, S.S.S.R.» 12 (1951). 129-133 (Russian). | MR 48621