Proceedings of the American Mathematical Society

Contents of Volume 33, Number 1
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Band decompositions of semigroups

Mohan S. Putcha and Julian Weissglass

Proc. Amer. Math. Soc. 33 (1972), 1-7

DOI: https://doi.org/10.1090/S0002-9939-1972-0291335-7

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Ideals in halfrings

H. E. Stone

Proc. Amer. Math. Soc. 33 (1972), 8-14

DOI: https://doi.org/10.1090/S0002-9939-1972-0291228-5

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On groups of exponent four. III

N. D. Gupta and R. B. Quintana

Proc. Amer. Math. Soc. 33 (1972), 15-19

DOI: https://doi.org/10.1090/S0002-9939-1972-0292919-2

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On an identity of Eckford Cohen

M. V. Subbarao and D. Suryanarayana

Proc. Amer. Math. Soc. 33 (1972), 20-24

DOI: https://doi.org/10.1090/S0002-9939-1972-0292778-8

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A coefficient ring for finite non-commutative rings

W. Edwin Clark

Proc. Amer. Math. Soc. 33 (1972), 25-28

DOI: https://doi.org/10.1090/S0002-9939-1972-0294411-8

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An “extra” law for characterizing Moufang loops

Orin Chein and D. A. Robinson

Proc. Amer. Math. Soc. 33 (1972), 29-32

DOI: https://doi.org/10.1090/S0002-9939-1972-0292987-8

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A note on $K$-commutativity of matrices

Edmond Dale Dixon and Nancy Wong

Proc. Amer. Math. Soc. 33 (1972), 33-38

DOI: https://doi.org/10.1090/S0002-9939-1972-0292864-2

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Bi-unitary perfect numbers

Charles R. Wall

Proc. Amer. Math. Soc. 33 (1972), 39-42

DOI: https://doi.org/10.1090/S0002-9939-1972-0289403-9

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A characterization of groups with isomorphic subgroups

Donald W. Miller

Proc. Amer. Math. Soc. 33 (1972), 43-45

DOI: https://doi.org/10.1090/S0002-9939-1972-0292930-1

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Gronwall’s inequality for systems of partial differential equations in two independent variables

Donald R. Snow

Proc. Amer. Math. Soc. 33 (1972), 46-54

DOI: https://doi.org/10.1090/S0002-9939-1972-0298188-1

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On the Fredholm alternative for nonlinear functional equations in Banach spaces

Peter Hess

Proc. Amer. Math. Soc. 33 (1972), 55-61

DOI: https://doi.org/10.1090/S0002-9939-1972-0301585-9

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On the extremal solutions of $n$th-order linear differential equations

W. J. Kim

Proc. Amer. Math. Soc. 33 (1972), 62-68

DOI: https://doi.org/10.1090/S0002-9939-1972-0294780-9

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Stability of solutions of linear systems with dominant main diagonal

Charles Kahane

Proc. Amer. Math. Soc. 33 (1972), 69-71

DOI: https://doi.org/10.1090/S0002-9939-1972-0294799-8

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Perturbations of dissipative operators with relative bound one

Paul R. Chernoff

Proc. Amer. Math. Soc. 33 (1972), 72-74

DOI: https://doi.org/10.1090/S0002-9939-1972-0296745-X

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A conjugacy criterion

Robert R. Stevens

Proc. Amer. Math. Soc. 33 (1972), 75-80

DOI: https://doi.org/10.1090/S0002-9939-1972-0289860-8

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On spaces with norms of negative and positive order

Gideon Peyser

Proc. Amer. Math. Soc. 33 (1972), 81-88

DOI: https://doi.org/10.1090/S0002-9939-1972-0296665-0

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Application of a lemma on bilinear forms to a problem in nonlinear oscillations

A. C. Lazer

Proc. Amer. Math. Soc. 33 (1972), 89-94

DOI: https://doi.org/10.1090/S0002-9939-1972-0293179-9

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Unitary groups and commutators

Robert M. Kauffman

Proc. Amer. Math. Soc. 33 (1972), 95-100

DOI: https://doi.org/10.1090/S0002-9939-1972-0290167-3

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Oscillation of solutions of a generalized Liénard equation

Donald C. Benson

Proc. Amer. Math. Soc. 33 (1972), 101-106

DOI: https://doi.org/10.1090/S0002-9939-1972-0291553-8

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On a converse of Young’s inequality

Ih Ching Hsu

Proc. Amer. Math. Soc. 33 (1972), 107-108

DOI: https://doi.org/10.1090/S0002-9939-1972-0291383-7

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Cyclic vectors of a cyclic operator span the space

L. Gehér

Proc. Amer. Math. Soc. 33 (1972), 109-110

DOI: https://doi.org/10.1090/S0002-9939-1972-0290131-4

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A note on the asymptotic behavior of an integral equation

Carol Shilepsky

Proc. Amer. Math. Soc. 33 (1972), 111-113

DOI: https://doi.org/10.1090/S0002-9939-1972-0306851-9

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A spherical surface measure inequality for convex sets

Charles Fefferman, Max Jodeit and Michael D. Perlman

Proc. Amer. Math. Soc. 33 (1972), 114-119

DOI: https://doi.org/10.1090/S0002-9939-1972-0293500-1

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Differentiable functions and rough norms on Banach spaces

E. B. Leach and J. H. M. Whitfield

Proc. Amer. Math. Soc. 33 (1972), 120-126

DOI: https://doi.org/10.1090/S0002-9939-1972-0293394-4

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Spaces with given homeomorphism groups

M. C. Thornton

Proc. Amer. Math. Soc. 33 (1972), 127-131

DOI: https://doi.org/10.1090/S0002-9939-1972-0292054-3

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Hereditary ball-covers for some Banach manifolds

James E. West

Proc. Amer. Math. Soc. 33 (1972), 132-136

DOI: https://doi.org/10.1090/S0002-9939-1972-0336747-8

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Isotopic closed nonconjugate braids

K. Murasugi and R. S. D. Thomas

Proc. Amer. Math. Soc. 33 (1972), 137-139

DOI: https://doi.org/10.1090/S0002-9939-1972-0292061-0

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On torsion in $H$-spaces of rank two

Kai K. Dai

Proc. Amer. Math. Soc. 33 (1972), 140-142

DOI: https://doi.org/10.1090/S0002-9939-1972-0290360-X

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A fixed point theorem for $(n-2)$-connected $n$-polyhedra

Roger Waggoner

Proc. Amer. Math. Soc. 33 (1972), 143-145

DOI: https://doi.org/10.1090/S0002-9939-1972-0293622-5

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Common fixed-points for equicontinuous semigroups of mappings

Theodore Mitchell

Proc. Amer. Math. Soc. 33 (1972), 146-150

DOI: https://doi.org/10.1090/S0002-9939-1972-0289735-4

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Homotopy types of the deleted product of unions of two simplexes

W. T. Whitley

Proc. Amer. Math. Soc. 33 (1972), 151-155

DOI: https://doi.org/10.1090/S0002-9939-1972-0292078-6

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Some fixed point results for $UV$ decompositions of compact metric spaces

John Cobb and William Voxman

Proc. Amer. Math. Soc. 33 (1972), 156-160

DOI: https://doi.org/10.1090/S0002-9939-1972-0290340-4

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Cauchy sequences in semimetric spaces

Dennis K. Burke

Proc. Amer. Math. Soc. 33 (1972), 161-164

DOI: https://doi.org/10.1090/S0002-9939-1972-0290328-3

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Weak disjointness of transformation groups

Reuven Peleg

Proc. Amer. Math. Soc. 33 (1972), 165-170

DOI: https://doi.org/10.1090/S0002-9939-1972-0298642-2

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Shelling $3$-cells in compact triangulated $3$-manifolds

L. B. Treybig

Proc. Amer. Math. Soc. 33 (1972), 171-174

DOI: https://doi.org/10.1090/S0002-9939-1972-0290374-X

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The lattice of ideals of a compact semilattice

A. R. Stralka

Proc. Amer. Math. Soc. 33 (1972), 175-180

DOI: https://doi.org/10.1090/S0002-9939-1972-0308325-8

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Almost continuous real functions

K. R. Kellum and B. D. Garrett

Proc. Amer. Math. Soc. 33 (1972), 181-184

DOI: https://doi.org/10.1090/S0002-9939-1972-0293026-5

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Conditions implying continuity of open and closed functions

Ivan Baggs

Proc. Amer. Math. Soc. 33 (1972), 185-190

DOI: https://doi.org/10.1090/S0002-9939-1972-0292041-5

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A necessary and sufficient condition for $\beta X\backslash X$ to be an indecomposable continuum

R. F. Dickman

Proc. Amer. Math. Soc. 33 (1972), 191-194

DOI: https://doi.org/10.1090/S0002-9939-1972-0295296-6

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A set-theoretic proposition implying the metrizability of normal Moore spaces

Franklin D. Tall

Proc. Amer. Math. Soc. 33 (1972), 195-198

DOI: https://doi.org/10.1090/S0002-9939-1972-0300239-2

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A Baire space extension

R. A. McCoy

Proc. Amer. Math. Soc. 33 (1972), 199-202

DOI: https://doi.org/10.1090/S0002-9939-1972-0293569-4

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Embedding partially ordered spaces in topological semilattices

Lloyd D. Tucker

Proc. Amer. Math. Soc. 33 (1972), 203-206

DOI: https://doi.org/10.1090/S0002-9939-1972-0292724-7

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A note on Lévy’s Brownian process on the Hilbert sphere

Peggy Tang Strait

Proc. Amer. Math. Soc. 33 (1972), 207-209

DOI: https://doi.org/10.1090/S0002-9939-1972-0290465-3

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Unexpected behavior for solutions of a second order, selfadjoint equation

H. Arthur DeKleine

Proc. Amer. Math. Soc. 33 (1972), 210

DOI: https://doi.org/10.1090/S0002-9939-1972-0293164-7

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Fiber homotopic trivial bundles over complex projective spaces

Kee Yuen Lam

Proc. Amer. Math. Soc. 33 (1972), 211-212

DOI: https://doi.org/10.1090/S0002-9939-1972-0293654-7

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