## Vol 15 (1964)

#### Articles

 Wesentliche Selbstadjungiertheit singulärer elliptischer Differentialoperatoren zweiter Ordnung in $C_0^\infty(G)$. Konrad Jörgens 5-17
 Folner's Conditions for Amenable Semi-Groups. I. Namioka 18-28
 Recursive Functions and Regressive Isols. J. Barrack 29-42
 Diophantine Equations in Recursive Difference. R. L. Goodstein 43-48
 Holomorphe Überlagerungskorrespondenzen. Hans Rischel 49-63
 Congruences for the Coefficients of the Modular Invariant $j(\tau)$. Hans-fredrick Aas 64-68
 Ein Approximationslemma in komplexen Banachräumen mit positivem Kegel. Ulrich Krengel 69-78
 On an Inequality for Laurent Polynomials. Warren Stenberg 79-82
 Remark on Eigenfunction Expansions for Elliptic Operators with Constant Coefficients. J. Peetre 83-92
 Strongly Subharmonic Functions. Lars Garding, Lars Hörmander 93-96
 On the Geometry of Choquet Simplexes. Erik M. Alfsen 97-110
 Asymptotic Estimates for the Finite Predictor. A. Devinatz 111-120
 Extremal Properties of the Successive Derivatives of Polynomials and Rational Functions. Q. I. Rahman 121-130
 An Extremal Problem Related to Bernstein's Approximation Problem. Gösta Wahde 131-141
 A Note on Formal and Analytic Cauchy Problems for Systems with Constant Coefficients. Jan Persson 142-146
 The Ranges of Certain Convolution Operators. Edwin Hewitt 147-155
 A Generalization of the $C(X)$-Characterizations of Topological Spaces. Audun Holme 156-162
 A Note on the Radical of the Second Conjugate Algebra of a Semigroup Algebra. E. Granirer, M. Rajagopalan 163-166
 Mergelyan's Theorem on Uniform Polynomial Approximation. Lennart Carleson 167-175
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