Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2024 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Contents of Volume 102, Number 2
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Some amalgam structures for Bianchi groups: Charles Frohman and Benjamin Fine; Proc. Amer. Math. Soc. 102 (1988), 221-229; DOI: https://doi.org/10.1090/S0002-9939-1988-0920977-X; PDF

Elliptically embedded subgroups of polycyclic groups: A. H. Rhemtulla and J. S. Wilson; Proc. Amer. Math. Soc. 102 (1988), 230-234; DOI: https://doi.org/10.1090/S0002-9939-1988-0920978-1; PDF

Rings graded by polycyclic-by-finite groups: William Chin and Declan Quinn; Proc. Amer. Math. Soc. 102 (1988), 235-241; DOI: https://doi.org/10.1090/S0002-9939-1988-0920979-3; PDF

Path-lifting for Grothendieck toposes: Ieke Moerdijk; Proc. Amer. Math. Soc. 102 (1988), 242-248; DOI: https://doi.org/10.1090/S0002-9939-1988-0920980-X; PDF

One-relator quotients and free products of cyclics: Benjamin Fine, James Howie and Gerhard Rosenberger; Proc. Amer. Math. Soc. 102 (1988), 249-254; DOI: https://doi.org/10.1090/S0002-9939-1988-0920981-1; PDF

Multiplicities of the eigenvalues of the discrete Schrödinger equation in any dimension: Dan Burghelea and Thomas Kappeler; Proc. Amer. Math. Soc. 102 (1988), 255-260; DOI: https://doi.org/10.1090/S0002-9939-1988-0920982-3; PDF

Derivations and (hyper)invariant subspaces of a bounded operator: Shuang Zhang; Proc. Amer. Math. Soc. 102 (1988), 261-267; DOI: https://doi.org/10.1090/S0002-9939-1988-0920983-5; PDF

Extensions of certain compact operators on vector-valued continuous functions: Surjit Singh Khurana; Proc. Amer. Math. Soc. 102 (1988), 268-270; DOI: https://doi.org/10.1090/S0002-9939-1988-0920984-7; PDF

A counterexample to the nodal domain conjecture and a related semilinear equation: Chang Shou Lin and Wei-Ming Ni; Proc. Amer. Math. Soc. 102 (1988), 271-277; DOI: https://doi.org/10.1090/S0002-9939-1988-0920985-9; PDF

An estimate for certain meromorphic univalent functions: Ming Qin Xie; Proc. Amer. Math. Soc. 102 (1988), 278-282; DOI: https://doi.org/10.1090/S0002-9939-1988-0920986-0; PDF

Extremal problems for Lorentz classes of nonnegative polynomials in $L^2$ metric with Jacobi weight: Gradimir V. Milovanović and Miodrag S. Petković; Proc. Amer. Math. Soc. 102 (1988), 283-289; DOI: https://doi.org/10.1090/S0002-9939-1988-0920987-2; PDF

Weighted norm inequalities for multipliers: Cristian E. Gutiérrez; Proc. Amer. Math. Soc. 102 (1988), 290-294; DOI: https://doi.org/10.1090/S0002-9939-1988-0920988-4; PDF

A characterization of $L^p$-improving measures: Kathryn E. Hare; Proc. Amer. Math. Soc. 102 (1988), 295-299; DOI: https://doi.org/10.1090/S0002-9939-1988-0920989-6; PDF

Spectrum of the product of operators: Milan Hladnik and Matjaž Omladič; Proc. Amer. Math. Soc. 102 (1988), 300-302; DOI: https://doi.org/10.1090/S0002-9939-1988-0920990-2; PDF

Fatou’s lemma in infinite-dimensional spaces: Nicholas C. Yannelis; Proc. Amer. Math. Soc. 102 (1988), 303-310; DOI: https://doi.org/10.1090/S0002-9939-1988-0920991-4; PDF

On Hörmander’s ratio theorems: Fatma B. Jamjoom and N. Zaheer; Proc. Amer. Math. Soc. 102 (1988), 311-316; DOI: https://doi.org/10.1090/S0002-9939-1988-0920992-6; PDF

Smooth convex $t$-norms do not exist: C. Alsina and M. S. Tomás; Proc. Amer. Math. Soc. 102 (1988), 317-320; DOI: https://doi.org/10.1090/S0002-9939-1988-0920993-8; PDF

$c_0$-subspaces and fourth dual types: Vasiliki A. Farmaki; Proc. Amer. Math. Soc. 102 (1988), 321-328; DOI: https://doi.org/10.1090/S0002-9939-1988-0920994-X; PDF

Analyticity of the interface of the porous media equation after the waiting time: Sigurd Angenent; Proc. Amer. Math. Soc. 102 (1988), 329-336; DOI: https://doi.org/10.1090/S0002-9939-1988-0920995-1; PDF

A counterexample to an F. and M. Riesz-type theorem: Krzysztof Samotij; Proc. Amer. Math. Soc. 102 (1988), 337-340; DOI: https://doi.org/10.1090/S0002-9939-1988-0920996-3; PDF

Regular variation in $\textbf {R}^k$: Mark M. Meerschaert; Proc. Amer. Math. Soc. 102 (1988), 341-348; DOI: https://doi.org/10.1090/S0002-9939-1988-0920997-5; PDF

On extreme points of families described by subordination: Rahman Younis; Proc. Amer. Math. Soc. 102 (1988), 349-354; DOI: https://doi.org/10.1090/S0002-9939-1988-0920998-7; PDF

On the relation between $C^*$-algebras of foliations and those of their coverings: Xiaolu Wang; Proc. Amer. Math. Soc. 102 (1988), 355-360; DOI: https://doi.org/10.1090/S0002-9939-1988-0920999-9; PDF

$L^p$-multipliers: a new proof of an old theorem: Tomas P. Schonbek; Proc. Amer. Math. Soc. 102 (1988), 361-364; DOI: https://doi.org/10.1090/S0002-9939-1988-0921000-3; PDF

Strongly commuting selfadjoint operators and commutants of unbounded operator algebras: Konrad Schmüdgen; Proc. Amer. Math. Soc. 102 (1988), 365-372; DOI: https://doi.org/10.1090/S0002-9939-1988-0921001-5; PDF

A construction of finite and $\sigma$-finite invariant measures in measure spaces: Yoshihiro Kubokawa; Proc. Amer. Math. Soc. 102 (1988), 373-380; DOI: https://doi.org/10.1090/S0002-9939-1988-0921002-7; PDF

A note on the $g$-function: J. Michael Wilson; Proc. Amer. Math. Soc. 102 (1988), 381-382; DOI: https://doi.org/10.1090/S0002-9939-1988-0921003-9; PDF

Decidable sentences over polynomial rings: Shih Ping Tung; Proc. Amer. Math. Soc. 102 (1988), 383-388; DOI: https://doi.org/10.1090/S0002-9939-1988-0921004-0; PDF

Completeness theorem for singular biprobability models: Miodrag Rašković; Proc. Amer. Math. Soc. 102 (1988), 389-392; DOI: https://doi.org/10.1090/S0002-9939-1988-0921005-2; PDF

Vector-valued stochastic processes. II. A Radon-Nikodým theorem for vector-valued processes with finite variation: Nicolae Dinculeanu; Proc. Amer. Math. Soc. 102 (1988), 393-401; DOI: https://doi.org/10.1090/S0002-9939-1988-0921006-4; PDF

Expansion of discrete and closure-preserving families: Takemi Mizokami; Proc. Amer. Math. Soc. 102 (1988), 402-406; DOI: https://doi.org/10.1090/S0002-9939-1988-0921007-6; PDF

Spans of simple triods: Thelma West; Proc. Amer. Math. Soc. 102 (1988), 407-415; DOI: https://doi.org/10.1090/S0002-9939-1988-0921008-8; PDF

The separable representations of $\textrm {U}(H)$: Doug Pickrell; Proc. Amer. Math. Soc. 102 (1988), 416-420; DOI: https://doi.org/10.1090/S0002-9939-1988-0921009-X; PDF

Two questions on Heegaard diagrams of $S^3$: José María Montesinos; Proc. Amer. Math. Soc. 102 (1988), 421-425; DOI: https://doi.org/10.1090/S0002-9939-1988-0921010-6; PDF

Tautness and locally finitely-valued Alexander-Spanier cochains: Satya Deo and Atul N. Roy; Proc. Amer. Math. Soc. 102 (1988), 426-430; DOI: https://doi.org/10.1090/S0002-9939-1988-0921011-8; PDF

Unstable compositions related to the image of $J$: Mark Mahowald and Robert Thompson; Proc. Amer. Math. Soc. 102 (1988), 431-436; DOI: https://doi.org/10.1090/S0002-9939-1988-0921012-X; PDF

On forbidden minors for $\textrm {GF}(3)$: Jeff Kahn and Paul Seymour; Proc. Amer. Math. Soc. 102 (1988), 437-440; DOI: https://doi.org/10.1090/S0002-9939-1988-0921013-1; PDF

Vector measures with values in the compact operators: Werner Ricker; Proc. Amer. Math. Soc. 102 (1988), 441-442; DOI: https://doi.org/10.1090/S0002-9939-1988-0921014-3; PDF