## Contents of Volume 54, Number 4

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- Miscellaneous front pages, Bull. Amer. Math. Soc., Volume 54, Number 4 (1948)
- Bull. Amer. Math. Soc.
**54**(1948)

- Miscellaneous back pages, Bull. Amer. Math. Soc., Volume 54, Number 4 (1948)
- Bull. Amer. Math. Soc.
**54**(1948)

- On rings of analytic functions
- Lipman Bers PDF
- Bull. Amer. Math. Soc.
**54**(1948), 311-315

- The center of a Jordan ring
- N. Jacobson PDF
- Bull. Amer. Math. Soc.
**54**(1948), 316-322

- On prime power Abelian groups
- Yenchien Yeh PDF
- Bull. Amer. Math. Soc.
**54**(1948), 323-327

- Symmetry of algebras over a number field
- Saunders MacLane PDF
- Bull. Amer. Math. Soc.
**54**(1948), 328-333

- Determination of all classes of positive quaternary quadratic forms which represent all (positive) integers
- Margaret F. Willerding PDF
- Bull. Amer. Math. Soc.
**54**(1948), 334-337

- Quadratic forms over fields with a valuation
- William H. Durfee PDF
- Bull. Amer. Math. Soc.
**54**(1948), 338-351

- Relations between hypersurface cross ratios, and a combinatorial formula for partitions of a polygon, for permanent preponderance, and for non-associative products
- Th. Motzkin PDF
- Bull. Amer. Math. Soc.
**54**(1948), 352-360

- Independence of resultants
- Th. Motzkin PDF
- Bull. Amer. Math. Soc.
**54**(1948), 360-365

- On the sum of cubes
- E. Rosenthall PDF
- Bull. Amer. Math. Soc.
**54**(1948), 366-370

- On some new questions on the distribution of prime numbers
- P. Erdös and P. Turán PDF
- Bull. Amer. Math. Soc.
**54**(1948), 371-378

- On Mersenne’s number $M_{227}$ and cognate data
- H. S. Uhler PDF
- Bull. Amer. Math. Soc.
**54**(1948), 378-380

- Recursive properties of transformation groups. II
- W. H. Gottschalk PDF
- Bull. Amer. Math. Soc.
**54**(1948), 381-383

- Fixed point theorems for interior transformations
- O. H. Hamilton PDF
- Bull. Amer. Math. Soc.
**54**(1948), 383-385

- An extension of Alexandroff’s mapping theorem
- C. H. Dowker PDF
- Bull. Amer. Math. Soc.
**54**(1948), 386-391

- On mean values
- J. Aczél PDF
- Bull. Amer. Math. Soc.
**54**(1948), 392-400

- On an inequality of P. Turán concerning Legendre polynomials
- G. Szegö PDF
- Bull. Amer. Math. Soc.
**54**(1948), 401-405

- Note on the eigenvalues of the Sturm-Liouville differential equation
- Gerald Freilich PDF
- Bull. Amer. Math. Soc.
**54**(1948), 405-408

- A homogeneous differential system of infinite order with nonvanishing solution
- S. Bochner and D. V. Widder PDF
- Bull. Amer. Math. Soc.
**54**(1948), 409-415

- The range of a vector measure
- Paul R. Halmos PDF
- Bull. Amer. Math. Soc.
**54**(1948), 416-421

- On the distribution of the maximum of successive cumulative sums of independently but not identically distributed chance variables
- Abraham Wald PDF
- Bull. Amer. Math. Soc.
**54**(1948), 422-430

- Approximation by polygons and polyhedra
- László Fejes Tóth PDF
- Bull. Amer. Math. Soc.
**54**(1948), 431-438