Contents of Volume 81, Number 1
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- $K$-theory of Azumaya algebras
- Charles A. Weibel PDF
- Proc. Amer. Math. Soc. 81 (1981), 1-7
- A new proof of a result of Levitzki
- Abraham A. Klein PDF
- Proc. Amer. Math. Soc. 81 (1981), 8
- Finitely convergent and concentric semigroups
- M. Satyanarayana PDF
- Proc. Amer. Math. Soc. 81 (1981), 9-13
- Quotients of valuated vector spaces
- Paul Hill PDF
- Proc. Amer. Math. Soc. 81 (1981), 14-18
- Another graded algebra with a nonrational Hilbert series
- Yuji Kobayashi PDF
- Proc. Amer. Math. Soc. 81 (1981), 19-22
- An additive representation for real functions on the product of a set and a lattice
- W. J. R. Eplett PDF
- Proc. Amer. Math. Soc. 81 (1981), 23-26
- Rationally varying polarizing subalgebras in nilpotent Lie algebras
- Lawrence Corwin and Frederick P. Greenleaf PDF
- Proc. Amer. Math. Soc. 81 (1981), 27-32
- An upper bound for the sum of large differences between prime numbers
- R. J. Cook PDF
- Proc. Amer. Math. Soc. 81 (1981), 33-40
- Generalised Lipschitz class of functions and the absolute summability of Fourier series by Nörlund means
- S. N. Lal and K. N. Singh PDF
- Proc. Amer. Math. Soc. 81 (1981), 41-49
- Spectral multiplicity for tensor products of normal operators
- Edward A. Azoff PDF
- Proc. Amer. Math. Soc. 81 (1981), 50-54
- A characterization of minimal homogeneous Banach spaces
- Hans G. Feichtinger PDF
- Proc. Amer. Math. Soc. 81 (1981), 55-61
- Uniform approximation by rational modules on nowhere dense sets
- Tavan Trent and James Li Ming Wang PDF
- Proc. Amer. Math. Soc. 81 (1981), 62-64
- A lower bound for the fundamental frequency of a convex region
- M. H. Protter PDF
- Proc. Amer. Math. Soc. 81 (1981), 65-70
- On the fixed-point theory for local $k$-pseudocontractions
- Claudio Morales PDF
- Proc. Amer. Math. Soc. 81 (1981), 71-74
- A Sturm theorem for partial differential equations of mixed type
- Kurt Kreith PDF
- Proc. Amer. Math. Soc. 81 (1981), 75-78
- On compact multipliers of Banach algebras
- Herbert Kamowitz PDF
- Proc. Amer. Math. Soc. 81 (1981), 79-80
- On the weak Radon-Nikodým property
- Nassif Ghoussoub and Elias Saab PDF
- Proc. Amer. Math. Soc. 81 (1981), 81-84
- On extending the Lebesgue integral
- James Foran PDF
- Proc. Amer. Math. Soc. 81 (1981), 85-88
- An elementary proof of the Stone-Weierstrass theorem
- Bruno Brosowski and Frank Deutsch PDF
- Proc. Amer. Math. Soc. 81 (1981), 89-92
- Dans un espace de Banach reticulé solide, la propriété de Radon-Nikodým et celle de Kreĭn-Mil′man sont équivalentes
- Jean Bourgain and Michel Talagrand PDF
- Proc. Amer. Math. Soc. 81 (1981), 93-96
- Another $q$-extension of the beta function
- George E. Andrews and Richard Askey PDF
- Proc. Amer. Math. Soc. 81 (1981), 97-100
- Integral identities of norms and characterization of inner product spaces
- Časlav V. Stanojević and Ana M. Suchanek PDF
- Proc. Amer. Math. Soc. 81 (1981), 101-103
- Some properties of closed $1$-forms on a special Riemannian manifold
- Gr. Tsagas PDF
- Proc. Amer. Math. Soc. 81 (1981), 104-106
- Characterization of conditional expectation operators for Banach-valued functions
- D. Landers and L. Rogge PDF
- Proc. Amer. Math. Soc. 81 (1981), 107-110
- Simple homotopy types for $(G, m)$-complexes
- Micheal N. Dyer PDF
- Proc. Amer. Math. Soc. 81 (1981), 111-115
- Product spaces in locales
- John Isbell PDF
- Proc. Amer. Math. Soc. 81 (1981), 116-118
- On insertion of a continuous function
- M. Powderly PDF
- Proc. Amer. Math. Soc. 81 (1981), 119-120
- Some properties of $H$-spaces of rank $2$
- C. A. McGibbon PDF
- Proc. Amer. Math. Soc. 81 (1981), 121-124
- On the two-realizability of chain complexes
- Sushil Jajodia PDF
- Proc. Amer. Math. Soc. 81 (1981), 125-128
- $\sigma$-coherent continua are hereditarily locally connected
- M. R. Hagan and W. S. Mahavier PDF
- Proc. Amer. Math. Soc. 81 (1981), 129-132
- A remarkable simple closed curve: revisited
- O. G. Harrold PDF
- Proc. Amer. Math. Soc. 81 (1981), 133-136
- Spaces with dense conditionally compact subsets
- Andrew J. Berner PDF
- Proc. Amer. Math. Soc. 81 (1981), 137-142
- Further divisibility properties of the $q$-tangent numbers
- Dominique Foata PDF
- Proc. Amer. Math. Soc. 81 (1981), 143-148
- A symmetric space of noncompact type has no equivariant isometric immersions into the Euclidean space
- Jorge Vargas PDF
- Proc. Amer. Math. Soc. 81 (1981), 149-150
- Pseudocompact metacompact spaces are compact
- W. Stephen Watson PDF
- Proc. Amer. Math. Soc. 81 (1981), 151-152
- Cartan matrices, finite groups of quaternions, and Kleinian singularities
- John McKay PDF
- Proc. Amer. Math. Soc. 81 (1981), 153-154
- A variant of the chain rule for differential calculus
- Richard A. Graff PDF
- Proc. Amer. Math. Soc. 81 (1981), 155-156