LEADER 03106nam 2200517 450 001 996466412603316 005 20230421123325.0 010 $a3-030-74636-4 024 7 $a10.1007/978-3-030-74636-0 035 $a(CKB)5590000000486865 035 $a(DE-He213)978-3-030-74636-0 035 $a(MiAaPQ)EBC6641045 035 $a(Au-PeEL)EBL6641045 035 $a(OCoLC)1257666630 035 $a(PPN)269152431 035 $a(EXLCZ)995590000000486865 100 $a20220205d2021 uy 0 101 0 $aeng 135 $aurnn#008mamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aLebesgue points and summability of higher dimensional Fourier series /$fFerenc Weisz 205 $a1st ed. 2021. 210 1$aCham, Switzerland :$cBirkha?user,$d[2021] 210 4$d©2021 215 $a1 online resource (XIII, 290 p. 24 illus., 1 illus. in color.) 311 $a3-030-74635-6 327 $aOne-dimensional Fourier series -- lq-summability of higher dimensional Fourier series -- Rectangular summability of higher dimensional Fourier series -- Lebesgue points of higher dimensional functions. 330 $aThis monograph presents the summability of higher dimensional Fourier series, and generalizes the concept of Lebesgue points. Focusing on Fejér and Cesàro summability, as well as theta-summation, readers will become more familiar with a wide variety of summability methods. Within the theory of higher dimensional summability of Fourier series, the book also provides a much-needed simple proof of Lebesgue?s theorem, filling a gap in the literature. Recent results and real-world applications are highlighted as well, making this a timely resource. The book is structured into four chapters, prioritizing clarity throughout. Chapter One covers basic results from the one-dimensional Fourier series, and offers a clear proof of the Lebesgue theorem. In Chapter Two, convergence and boundedness results for the lq-summability are presented. The restricted and unrestricted rectangular summability are provided in Chapter Three, as well as the sufficient and necessary condition for the norm convergence of the rectangular theta-means. Chapter Four then introduces six types of Lebesgue points for higher dimensional functions. Lebesgue Points and Summability of Higher Dimensional Fourier Series will appeal to researchers working in mathematical analysis, particularly those interested in Fourier and harmonic analysis. Researchers in applied fields will also find this useful. 606 $aSummability theory 606 $aSèries de Fourier$2thub 606 $aSumabilitat$2thub 608 $aLlibres electrònics$2thub 615 0$aSummability theory. 615 7$aSèries de Fourier 615 7$aSumabilitat 676 $a515.243 700 $aWeisz$b Ferenc$f1964-$060660 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a996466412603316 996 $aLebesgue Points and Summability of Higher Dimensional Fourier Series$92135448 997 $aUNISA