Proceedings of the American Mathematical Society

Contents of Volume 80, Number 1
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$K_{2}$ measures excision for $K_{1}$

Susan C. Geller and Charles A. Weibel

Proc. Amer. Math. Soc. 80 (1980), 1-9

DOI: https://doi.org/10.1090/S0002-9939-1980-0574499-1

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Nonexistence of coreflections and coproducts in some subcategories of semigroups

P. G. Trotter

Proc. Amer. Math. Soc. 80 (1980), 10-14

DOI: https://doi.org/10.1090/S0002-9939-1980-0574500-5

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On Bieberbach’s analysis of discrete Euclidean groups

R. K. Oliver

Proc. Amer. Math. Soc. 80 (1980), 15-21

DOI: https://doi.org/10.1090/S0002-9939-1980-0574501-7

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A class of finite group-amalgams

Dragomir Ž. Djoković

Proc. Amer. Math. Soc. 80 (1980), 22-26

DOI: https://doi.org/10.1090/S0002-9939-1980-0574502-9

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On finite groups containing three $CC$-subgroups

Zvi Arad and Pamela Ferguson

Proc. Amer. Math. Soc. 80 (1980), 27-33

DOI: https://doi.org/10.1090/S0002-9939-1980-0574503-0

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Normal closure of one-variable equations in free groups

C. Sibertin-Blanc

Proc. Amer. Math. Soc. 80 (1980), 34-38

DOI: https://doi.org/10.1090/S0002-9939-1980-0574504-2

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A projective characterization for SKT-modules

Brian D. Wick

Proc. Amer. Math. Soc. 80 (1980), 39-43

DOI: https://doi.org/10.1090/S0002-9939-1980-0574505-4

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A classification theorem for SKT-modules

Brian D. Wick

Proc. Amer. Math. Soc. 80 (1980), 44-46

DOI: https://doi.org/10.1090/S0002-9939-1980-0574506-6

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Divided differences and systems of nonharmonic Fourier series

David Ullrich

Proc. Amer. Math. Soc. 80 (1980), 47-57

DOI: https://doi.org/10.1090/S0002-9939-1980-0574507-8

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Which operators are the self-commutators of compact operators?

Peng Fan and Che Kao Fong

Proc. Amer. Math. Soc. 80 (1980), 58-60

DOI: https://doi.org/10.1090/S0002-9939-1980-0574508-X

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Tame measures on certain compact sets

Hsuan Pei Lee

Proc. Amer. Math. Soc. 80 (1980), 61-67

DOI: https://doi.org/10.1090/S0002-9939-1980-0574509-1

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Compacité extrémale

Jean Bourgain and Michel Talagrand

Proc. Amer. Math. Soc. 80 (1980), 68-70

DOI: https://doi.org/10.1090/S0002-9939-1980-0574510-8

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Essentially Hermitian operators in $B(L_{p})$

G. D. Allen, D. A. Legg and J. D. Ward

Proc. Amer. Math. Soc. 80 (1980), 71-77

DOI: https://doi.org/10.1090/S0002-9939-1980-0574511-X

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Norm estimates relating polynomials and their derivatives

Zalman Rubinstein

Proc. Amer. Math. Soc. 80 (1980), 78-82

DOI: https://doi.org/10.1090/S0002-9939-1980-0574512-1

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Taylor-Dirichlet series and algebraic differential-difference equations

Frank Wadleigh

Proc. Amer. Math. Soc. 80 (1980), 83-89

DOI: https://doi.org/10.1090/S0002-9939-1980-0574513-3

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Linear differential equations with interval spectrum

Russell A. Johnson

Proc. Amer. Math. Soc. 80 (1980), 90-94

DOI: https://doi.org/10.1090/S0002-9939-1980-0574514-5

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Cyclic vectors of weighted shifts on $l^{p}$ spaces

B. S. Yadav and S. Chatterjee

Proc. Amer. Math. Soc. 80 (1980), 95-99

DOI: https://doi.org/10.1090/S0002-9939-1980-0574515-7

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Cyclic vectors of Lambert’s weighted shifts

B. S. Yadav and S. Chatterjee

Proc. Amer. Math. Soc. 80 (1980), 100-104

DOI: https://doi.org/10.1090/S0002-9939-1980-0574516-9

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$\kappa$-finiteness and $\kappa$-additivity of measures on sets and left invariant measures on discrete groups

Thomas E. Armstrong and Karel Prikry

Proc. Amer. Math. Soc. 80 (1980), 105-112

DOI: https://doi.org/10.1090/S0002-9939-1980-0574517-0

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The crossed product of a $C^{\ast }$-algebra by an endomorphism

William L. Paschke

Proc. Amer. Math. Soc. 80 (1980), 113-118

DOI: https://doi.org/10.1090/S0002-9939-1980-0574518-2

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Simple proof of a theorem of Erdős and Lax

Abdul Aziz and Q. G. Mohammad

Proc. Amer. Math. Soc. 80 (1980), 119-122

DOI: https://doi.org/10.1090/S0002-9939-1980-0574519-4

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On power compact operators

José Barría

Proc. Amer. Math. Soc. 80 (1980), 123-124

DOI: https://doi.org/10.1090/S0002-9939-1980-0574520-0

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Property $L$ and asymptotic abelianness for $W^*$-algebras

Edward Sarian

Proc. Amer. Math. Soc. 80 (1980), 125-129

DOI: https://doi.org/10.1090/S0002-9939-1980-0574521-2

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Shortest paths through pseudorandom points in the $d$-cube

J. Michael Steele

Proc. Amer. Math. Soc. 80 (1980), 130-134

DOI: https://doi.org/10.1090/S0002-9939-1980-0574522-4

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Recursively saturated models of set theory

John Stewart Schlipf

Proc. Amer. Math. Soc. 80 (1980), 135-142

DOI: https://doi.org/10.1090/S0002-9939-1980-0574523-6

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$\mathcal {L}^*(K)$ and other lattices of recursively enumerable sets

Richard A. Shore

Proc. Amer. Math. Soc. 80 (1980), 143-146

DOI: https://doi.org/10.1090/S0002-9939-1980-0574524-8

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Countably compact, locally countable $T_{2}$-spaces

J. E. Vaughan

Proc. Amer. Math. Soc. 80 (1980), 147-153

DOI: https://doi.org/10.1090/S0002-9939-1980-0574525-X

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Shape equivalence does not imply CE equivalence

Steve Ferry

Proc. Amer. Math. Soc. 80 (1980), 154-156

DOI: https://doi.org/10.1090/S0002-9939-1980-0574526-1

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Some characterizations of developable spaces

Harald Brandenburg

Proc. Amer. Math. Soc. 80 (1980), 157-161

DOI: https://doi.org/10.1090/S0002-9939-1980-0574527-3

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How many knots have the same group?

Jonathan Simon

Proc. Amer. Math. Soc. 80 (1980), 162-166

DOI: https://doi.org/10.1090/S0002-9939-1980-0574528-5

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Lifting semifree actions

R. Lashof

Proc. Amer. Math. Soc. 80 (1980), 167-171

DOI: https://doi.org/10.1090/S0002-9939-1980-0574529-7

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Weyl group actions and equivariant homotopy equivalence

Katsuo Kawakubo

Proc. Amer. Math. Soc. 80 (1980), 172-176

DOI: https://doi.org/10.1090/S0002-9939-1980-0574530-3

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A proof of a conjecture of A. H. Stone

R. F. Dickman

Proc. Amer. Math. Soc. 80 (1980), 177-180

DOI: https://doi.org/10.1090/S0002-9939-1980-0574531-5

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On conjugacy classes of elements of finite order in compact or complex semisimple Lie groups

Dragomir Ž. Djoković

Proc. Amer. Math. Soc. 80 (1980), 181-184

DOI: https://doi.org/10.1090/S0002-9939-1980-0574532-7

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The extension of norms on subgroups of free topological groups

Sidney A. Morris and Peter Nickolas

Proc. Amer. Math. Soc. 80 (1980), 185-188

DOI: https://doi.org/10.1090/S0002-9939-1980-0574533-9

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