Proceedings of the American Mathematical Society

Contents of Volume 113, Number 1
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A note on graded algebras

Edmund R. Puczyłowski

Proc. Amer. Math. Soc. 113 (1991), 1-3

DOI: https://doi.org/10.1090/S0002-9939-1991-0991706-9

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The loxodromic term of the Selberg trace formula for $\textrm {SL}(3,\textbf {Z})\backslash \textrm {SL}(3,\textbf {R})/\textrm {SO}(3,\textbf {R})$

D. I. Wallace

Proc. Amer. Math. Soc. 113 (1991), 5-9

DOI: https://doi.org/10.1090/S0002-9939-1991-1087473-3

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The super GAGA principle and families of super Riemann surfaces

Pankaj Topiwala and Jeffrey M. Rabin

Proc. Amer. Math. Soc. 113 (1991), 11-20

DOI: https://doi.org/10.1090/S0002-9939-1991-1057963-8

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Split braids

Stephen P. Humphries

Proc. Amer. Math. Soc. 113 (1991), 21-26

DOI: https://doi.org/10.1090/S0002-9939-1991-1072340-1

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The complexity of a module and elementary abelian subgroups: a geometric approach

Peter Symonds

Proc. Amer. Math. Soc. 113 (1991), 27-29

DOI: https://doi.org/10.1090/S0002-9939-1991-1062838-4

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A note on inner actions of Hopf algebras

Stefaan Caenepeel

Proc. Amer. Math. Soc. 113 (1991), 31-39

DOI: https://doi.org/10.1090/S0002-9939-1991-1069684-6

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Distributive lattices having $n$-permutable congruences

M. E. Adams and R. Beazer

Proc. Amer. Math. Soc. 113 (1991), 41-45

DOI: https://doi.org/10.1090/S0002-9939-1991-1057741-X

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Algebraic curves in $\textbf {R}\textrm {P}(1)\times \textbf {R}\textrm {P}(1)$

Patrick Gilmer

Proc. Amer. Math. Soc. 113 (1991), 47-52

DOI: https://doi.org/10.1090/S0002-9939-1991-1062388-5

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On the integrability and $L^ 1$-convergence of complex trigonometric series

Ferenc Móricz

Proc. Amer. Math. Soc. 113 (1991), 53-64

DOI: https://doi.org/10.1090/S0002-9939-1991-1072345-0

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A few remarks on Riesz summability of orthogonal series

PawełJ. Szabłowski

Proc. Amer. Math. Soc. 113 (1991), 65-75

DOI: https://doi.org/10.1090/S0002-9939-1991-1072349-8

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Polynomials with nonnegative coefficients

R. W. Barnard, W. Dayawansa, K. Pearce and D. Weinberg

Proc. Amer. Math. Soc. 113 (1991), 77-85

DOI: https://doi.org/10.1090/S0002-9939-1991-1072329-2

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On the weighted estimate of the solution associated with the Schrödinger equation

Si Lei Wang

Proc. Amer. Math. Soc. 113 (1991), 87-92

DOI: https://doi.org/10.1090/S0002-9939-1991-1069695-0

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Factorization of quasi-differential operators

W. N. Everitt, James S. Muldowney and Neeza Thandi

Proc. Amer. Math. Soc. 113 (1991), 93-98

DOI: https://doi.org/10.1090/S0002-9939-1991-1045592-1

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Estimates for the maximal operator of the Ornstein-Uhlenbeck semigroup

Cristian E. Gutiérrez and Wilfredo O. Urbina

Proc. Amer. Math. Soc. 113 (1991), 99-104

DOI: https://doi.org/10.1090/S0002-9939-1991-1068123-9

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On weak reverse integral inequalities for mean oscillations

Michelangelo Franciosi

Proc. Amer. Math. Soc. 113 (1991), 105-112

DOI: https://doi.org/10.1090/S0002-9939-1991-1068122-7

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Nonintegrability of superharmonic functions

Noriaki Suzuki

Proc. Amer. Math. Soc. 113 (1991), 113-115

DOI: https://doi.org/10.1090/S0002-9939-1991-1054163-2

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Some remarks about Rosen’s functions

Zbigniew Grande

Proc. Amer. Math. Soc. 113 (1991), 117-122

DOI: https://doi.org/10.1090/S0002-9939-1991-1052574-2

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Oscillations in neutral equations with periodic coefficients

G. Ladas, Ch. G. Philos and Y. G. Sficas

Proc. Amer. Math. Soc. 113 (1991), 123-134

DOI: https://doi.org/10.1090/S0002-9939-1991-1045596-9

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Weighted norm inequalities for operators of Hardy type

Steven Bloom and Ron Kerman

Proc. Amer. Math. Soc. 113 (1991), 135-141

DOI: https://doi.org/10.1090/S0002-9939-1991-1059623-6

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Weak compactness in $L^ 1(\mu ,X)$

A. Ülger

Proc. Amer. Math. Soc. 113 (1991), 143-149

DOI: https://doi.org/10.1090/S0002-9939-1991-1070533-0

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A Fréchet-Schwartz space with basis having a complemented subspace without basis

Jari Taskinen

Proc. Amer. Math. Soc. 113 (1991), 151-155

DOI: https://doi.org/10.1090/S0002-9939-1991-1049851-8

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A trace formula for two unitary operators with rank one commutator

Khristo N. Boyadzhiev

Proc. Amer. Math. Soc. 113 (1991), 157-162

DOI: https://doi.org/10.1090/S0002-9939-1991-1057950-X

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A multivariate generalization of a theorem of R. H. Farrell

D. Plachky

Proc. Amer. Math. Soc. 113 (1991), 163-165

DOI: https://doi.org/10.1090/S0002-9939-1991-1052873-4

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A characterization of spectral operators

Mehdi Radjabalipour

Proc. Amer. Math. Soc. 113 (1991), 167-170

DOI: https://doi.org/10.1090/S0002-9939-1991-1045148-0

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Complete metrics with nonpositive curvature on the disk

Duong Minh Duc

Proc. Amer. Math. Soc. 113 (1991), 171-176

DOI: https://doi.org/10.1090/S0002-9939-1991-1059624-8

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Hermitian surfaces and a twistor space of algebraic dimension $2$

Massimiliano Pontecorvo

Proc. Amer. Math. Soc. 113 (1991), 177-186

DOI: https://doi.org/10.1090/S0002-9939-1991-1074754-2

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The index of normal Fredholm elements of $C^ *$-algebras

J. A. Mingo and J. S. Spielberg

Proc. Amer. Math. Soc. 113 (1991), 187-192

DOI: https://doi.org/10.1090/S0002-9939-1991-1045144-3

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A full description of extreme points in $C(\Omega ,L^ \phi (\mu ))$

Marek Wisła

Proc. Amer. Math. Soc. 113 (1991), 193-200

DOI: https://doi.org/10.1090/S0002-9939-1991-1072351-6

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Geodesics in Euclidean space with analytic obstacle

Felix Albrecht and I. D. Berg

Proc. Amer. Math. Soc. 113 (1991), 201-207

DOI: https://doi.org/10.1090/S0002-9939-1991-1077783-8

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The Euclidean factor of a Hadamard manifold

Toshiaki Adachi and Fumiko Ohtsuka

Proc. Amer. Math. Soc. 113 (1991), 209-212

DOI: https://doi.org/10.1090/S0002-9939-1991-1074746-3

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On the commutativity of ultraproducts with direct products

Michel Hébert

Proc. Amer. Math. Soc. 113 (1991), 213-216

DOI: https://doi.org/10.1090/S0002-9939-1991-1086582-2

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$2^ {2^ \omega }$ nonisomorphic short ordered commutative domains whose quotient fields are long

Krzysztof Ciesielski

Proc. Amer. Math. Soc. 113 (1991), 217-227

DOI: https://doi.org/10.1090/S0002-9939-1991-1079888-4

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Geodesics and bounded harmonic functions on infinite planar graphs

S. Northshield

Proc. Amer. Math. Soc. 113 (1991), 229-233

DOI: https://doi.org/10.1090/S0002-9939-1991-1076576-5

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When are touchpoints limits for generalized Pólya urns?

Robin Pemantle

Proc. Amer. Math. Soc. 113 (1991), 235-243

DOI: https://doi.org/10.1090/S0002-9939-1991-1055778-8

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Finite cyclic subgroups determine the spectrum of the equivariant $K$-theory

Agnieszka Bojanowska

Proc. Amer. Math. Soc. 113 (1991), 245-249

DOI: https://doi.org/10.1090/S0002-9939-1991-1064899-5

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Linking and the shadowing property for piecewise monotone maps

Liang Chen

Proc. Amer. Math. Soc. 113 (1991), 251-263

DOI: https://doi.org/10.1090/S0002-9939-1991-1079695-2

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A nonexistence result for Moore $G$-spectra

S. R. Costenoble and S. Waner

Proc. Amer. Math. Soc. 113 (1991), 265-274

DOI: https://doi.org/10.1090/S0002-9939-1991-1041013-3

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The cosmic Hausdorff topology, the bounded Hausdorff topology and continuity of polarity

Jean-Paul Penot

Proc. Amer. Math. Soc. 113 (1991), 275-285

DOI: https://doi.org/10.1090/S0002-9939-1991-1068129-X

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Properties of locally H-closed spaces

Mike Girou

Proc. Amer. Math. Soc. 113 (1991), 287-295

DOI: https://doi.org/10.1090/S0002-9939-1991-1047001-5

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Nonexistence of almost complex structures on Grassmann manifolds

Parameswaran Sankaran

Proc. Amer. Math. Soc. 113 (1991), 297-302

DOI: https://doi.org/10.1090/S0002-9939-1991-1043420-1

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