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 97, Number 2
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An answer to a question of M. Newman on matrix completion: L. N. Vaserstein; Proc. Amer. Math. Soc. 97 (1986), 189-196; DOI: https://doi.org/10.1090/S0002-9939-1986-0835863-1; PDF

An isomorphism for the Grothendieck ring of a Hopf algebra order: Anna-Lise Jensen and Richard G. Larson; Proc. Amer. Math. Soc. 97 (1986), 197-200; DOI: https://doi.org/10.1090/S0002-9939-1986-0835864-3; PDF

On a conjecture of Zassenhaus on torsion units in integral group rings. II: César Polcino Milies, Jürgen Ritter and Sudarshan K. Sehgal; Proc. Amer. Math. Soc. 97 (1986), 201-206; DOI: https://doi.org/10.1090/S0002-9939-1986-0835865-5; PDF

The $n$th roots of solutions of linear ordinary differential equations: William A. Harris and Yasutaka Sibuya; Proc. Amer. Math. Soc. 97 (1986), 207-211; DOI: https://doi.org/10.1090/S0002-9939-1986-0835866-7; PDF

A group theoretical equivalent of the zero divisor problem: A. I. Lichtman; Proc. Amer. Math. Soc. 97 (1986), 212-216; DOI: https://doi.org/10.1090/S0002-9939-1986-0835867-9; PDF

On the Clifford index of algebraic curves: Edoardo Ballico; Proc. Amer. Math. Soc. 97 (1986), 217-218; DOI: https://doi.org/10.1090/S0002-9939-1986-0835868-0; PDF

The equations defining a curve of genus $4$: George R. Kempf; Proc. Amer. Math. Soc. 97 (1986), 219-225; DOI: https://doi.org/10.1090/S0002-9939-1986-0835869-2; PDF

Higher order singularities of morphisms to projective space: Johan P. Hansen; Proc. Amer. Math. Soc. 97 (1986), 226-232; DOI: https://doi.org/10.1090/S0002-9939-1986-0835870-9; PDF

Non-Artinian essential extensions of simple modules: K. R. Goodearl and A. H. Schofield; Proc. Amer. Math. Soc. 97 (1986), 233-236; DOI: https://doi.org/10.1090/S0002-9939-1986-0835871-0; PDF

Twisted sums of Banach and nuclear spaces: Paweł Domański; Proc. Amer. Math. Soc. 97 (1986), 237-243; DOI: https://doi.org/10.1090/S0002-9939-1986-0835872-2; PDF

Subhomogeneous AF $C^ \ast$-algebras and their Fubini products. II: Seung-Hyeok Kye; Proc. Amer. Math. Soc. 97 (1986), 244-246; DOI: https://doi.org/10.1090/S0002-9939-1986-0835873-4; PDF

Long periodic orbits of the triangle map: Manny Scarowsky and Abraham Boyarsky; Proc. Amer. Math. Soc. 97 (1986), 247-254; DOI: https://doi.org/10.1090/S0002-9939-1986-0835874-6; PDF

Integral representation without additivity: David Schmeidler; Proc. Amer. Math. Soc. 97 (1986), 255-261; DOI: https://doi.org/10.1090/S0002-9939-1986-0835875-8; PDF

Best $L_ 1$-approximation of $L_ 1$-approximately continuous functions on $(0,1)^ n$ by nondecreasing functions: R. B. Darst and Shu Sheng Fu; Proc. Amer. Math. Soc. 97 (1986), 262-264; DOI: https://doi.org/10.1090/S0002-9939-1986-0835876-X; PDF

Power series and nonnormal functions: J. S. Hwang and Peter Lappan; Proc. Amer. Math. Soc. 97 (1986), 265-268; DOI: https://doi.org/10.1090/S0002-9939-1986-0835877-1; PDF

On the oscillation of almost-periodic Sturm-Liouville operators with an arbitrary coupling constant: S. G. Halvorsen and A. B. Mingarelli; Proc. Amer. Math. Soc. 97 (1986), 269-272; DOI: https://doi.org/10.1090/S0002-9939-1986-0835878-3; PDF

Existence of best $n$-convex approximations: D. Zwick; Proc. Amer. Math. Soc. 97 (1986), 273-276; DOI: https://doi.org/10.1090/S0002-9939-1986-0835879-5; PDF

A new fixed point theorem on demicompact $1$-set-contraction mappings: Guo Zhen Li; Proc. Amer. Math. Soc. 97 (1986), 277-280; DOI: https://doi.org/10.1090/S0002-9939-1986-0835880-1; PDF

Spectral cutting for a class of subnormal operators: Bhushan L. Wadhwa; Proc. Amer. Math. Soc. 97 (1986), 281-285; DOI: https://doi.org/10.1090/S0002-9939-1986-0835881-3; PDF

A Poincaré-type inequality for solutions of elliptic differential equations: William P. Ziemer; Proc. Amer. Math. Soc. 97 (1986), 286-290; DOI: https://doi.org/10.1090/S0002-9939-1986-0835882-5; PDF

Most Riesz product measures are $L^ p$-improving: David L. Ritter; Proc. Amer. Math. Soc. 97 (1986), 291-295; DOI: https://doi.org/10.1090/S0002-9939-1986-0835883-7; PDF

A new inequality for complex-valued polynomial functions: Themistocles M. Rassias; Proc. Amer. Math. Soc. 97 (1986), 296-298; DOI: https://doi.org/10.1090/S0002-9939-1986-0835884-9; PDF

Approximation on disks: P. J. de Paepe; Proc. Amer. Math. Soc. 97 (1986), 299-302; DOI: https://doi.org/10.1090/S0002-9939-1986-0835885-0; PDF

More on convex functions of bounded type: A. W. Goodman; Proc. Amer. Math. Soc. 97 (1986), 303-306; DOI: https://doi.org/10.1090/S0002-9939-1986-0835886-2; PDF

Clifford isometries of the real Stiefel manifolds: Oscar A. Cámpoli; Proc. Amer. Math. Soc. 97 (1986), 307-310; DOI: https://doi.org/10.1090/S0002-9939-1986-0835887-4; PDF

On the existence of complete parallel vector fields: David J. Welsh; Proc. Amer. Math. Soc. 97 (1986), 311-314; DOI: https://doi.org/10.1090/S0002-9939-1986-0835888-6; PDF

Corps et anneaux de Rolle: Françoise Delon; Proc. Amer. Math. Soc. 97 (1986), 315-319; DOI: https://doi.org/10.1090/S0002-9939-1986-0835889-8; PDF

A one-one selection theorem: H. Sarbadhikari; Proc. Amer. Math. Soc. 97 (1986), 320-322; DOI: https://doi.org/10.1090/S0002-9939-1986-0835890-4; PDF

Lindenbaum algebras and partial conservativity: Christian Bennet; Proc. Amer. Math. Soc. 97 (1986), 323-327; DOI: https://doi.org/10.1090/S0002-9939-1986-0835891-6; PDF

Multiple images and local times of measurable functions: Simeon M. Berman; Proc. Amer. Math. Soc. 97 (1986), 328-330; DOI: https://doi.org/10.1090/S0002-9939-1986-0835892-8; PDF

A metric form of microtransitivity: Aarno Hohti; Proc. Amer. Math. Soc. 97 (1986), 331-338; DOI: https://doi.org/10.1090/S0002-9939-1986-0835893-X; PDF

On supercomplete spaces. III: Aarno Hohti; Proc. Amer. Math. Soc. 97 (1986), 339-342; DOI: https://doi.org/10.1090/S0002-9939-1986-0835894-1; PDF

On Rhoades’ open questions and some fixed point theorems for a class of mappings: Shih-Sen Chang; Proc. Amer. Math. Soc. 97 (1986), 343-346; DOI: https://doi.org/10.1090/S0002-9939-1986-0835895-3; PDF

Exact sequences of spectra and duality: Nicholas J. Kuhn; Proc. Amer. Math. Soc. 97 (1986), 347-351; DOI: https://doi.org/10.1090/S0002-9939-1986-0835896-5; PDF

On four-dimensional $h$-cobordism: Sławomor Kwasik; Proc. Amer. Math. Soc. 97 (1986), 352-354; DOI: https://doi.org/10.1090/S0002-9939-1986-0835897-7; PDF

Extension of continuous functions into uniform spaces: Salvador Hernández; Proc. Amer. Math. Soc. 97 (1986), 355-360; DOI: https://doi.org/10.1090/S0002-9939-1986-0835898-9; PDF

A counterexample in dynamical systems of the interval: Hsin Chu and Jin Cheng Xiong; Proc. Amer. Math. Soc. 97 (1986), 361-366; DOI: https://doi.org/10.1090/S0002-9939-1986-0835899-0; PDF

Concerning the function equation $f(g)=f$, regular mappings and periodic mappings: Sam W. Young; Proc. Amer. Math. Soc. 97 (1986), 367-371; DOI: https://doi.org/10.1090/S0002-9939-1986-0835900-4; PDF

Ranges of joint Laplace-Fourier transforms: Daniel J. Grubb; Proc. Amer. Math. Soc. 97 (1986), 372-373; DOI: https://doi.org/10.1090/S0002-9939-1986-0835901-6; PDF

Counterexample to the Lu Qi-Keng conjecture: Harold P. Boas; Proc. Amer. Math. Soc. 97 (1986), 374-375; DOI: https://doi.org/10.1090/S0002-9939-1986-0835902-8; PDF

The Kreĭn-Šmulian theorem: Robert Whitley; Proc. Amer. Math. Soc. 97 (1986), 376-377; DOI: https://doi.org/10.1090/S0002-9939-1986-0835903-X; PDF

Erratum to: “Bipowers in number fields”: D. K. Harrison; Proc. Amer. Math. Soc. 97 (1986), 378; DOI: https://doi.org/10.1090/S0002-9939-1986-0835904-1; PDF