Mathematics from Leningrad to Austin

- Volume 1.- Mathematics in a Broader Perspective (unpublished papers).- A Report on the University of Leningrad.- On the Work of the Mathematical Mind.- Proofs in Mathematics.- Writing Mathematical Books.- I. Summability and Number Theory.- G.G. Lorentz and the Theory of Summability.- [1] Über lineare Summierungsverfahren.- [8] Beziehungen zwischen den Umkehrsatzen der Limitierungstheorie.- [10] Über Limitierungsverfahren, die von einem Stieltjes-Integral abhangen.- [11] Eine Bemerkung über Limitierungsverfahren, die nicht schwächer als ein Cesàro-Verfahren sind.- [12] Fourier-Koeffizienten und funktionklassen.- [14] Tauberian theorems and Tauberian conditions.- [17] A contribution to the theory of divergent sequences.- [22] Direct theorems on methods of summability.- [23] (with K. Knoop) Beiträge zur absoluten.- [28] Direct theorems on methods of summability.- [29] Riesz methods of summation and orthogonal series.- [31] (with M.S. Macphail) Unbounded operators and a theorem of A. Robinson.- [33] Multiplicity of representation of integers by sums of elements of two given sets.- [36] (with A.G. Robinson) Core-consistency and total inclusion for methods of summability.- [37] Tauberian theorems for absolute summability.- [38] On a problem of additive number theory.- [39] Borel and Banach properties of methods of summation.- [42] (with K.L Zeller) Über Paare von limitierungsverfahren.- [43] (with K.L Zeller) Series rearrangements and analytic sets.- [44] (with P. Erdös) On the probability that n and g(n) are relatively prime.- [45] (with B.J. Eisenstadt) Boolean rings and Banach lattices.- [54] (with K.L. Zeller) Strong and ordinary summability.- [56] (with K.L. Zeller) Summation of sequences and series.- [80] (with K.L. Zeller) o-but not O-Tauberian theorems.- II. Interpolation.- The work of G.G. Lorentz on Birkhoff interpolation.- [76] Birkhoff approximation and the problem of free matrices.- [82] The Birkhoff interpolation theorem: