Proceedings of the American Mathematical Society

Contents of Volume 105, Number 2
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Factorization of matrices into partial isometries

Kung Hwang Kuo and Pei Yuan Wu

Proc. Amer. Math. Soc. 105 (1989), 263-272

DOI: https://doi.org/10.1090/S0002-9939-1989-0977922-1

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On the values at negative half-integers of the Dedekind zeta function of a real quadratic field

Min King Eie

Proc. Amer. Math. Soc. 105 (1989), 273-280

DOI: https://doi.org/10.1090/S0002-9939-1989-0977923-3

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A note on Jacobson rings and polynomial rings

Miguel Ferrero and Michael M. Parmenter

Proc. Amer. Math. Soc. 105 (1989), 281-286

DOI: https://doi.org/10.1090/S0002-9939-1989-0929416-7

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A Lie property in group rings

Antonino Giambruno and Sudarshan K. Sehgal

Proc. Amer. Math. Soc. 105 (1989), 287-292

DOI: https://doi.org/10.1090/S0002-9939-1989-0929415-5

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Invariants for a class of torsion-free abelian groups

D. Arnold and C. Vinsonhaler

Proc. Amer. Math. Soc. 105 (1989), 293-300

DOI: https://doi.org/10.1090/S0002-9939-1989-0935102-X

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The number of indecomposable sequences over an Artin algebra of finite type

Stephen P. Corwin

Proc. Amer. Math. Soc. 105 (1989), 301-304

DOI: https://doi.org/10.1090/S0002-9939-1989-0948148-2

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On the nonsimplicity of some convergence categories

E. Lowen and R. Lowen

Proc. Amer. Math. Soc. 105 (1989), 305-308

DOI: https://doi.org/10.1090/S0002-9939-1989-0936777-1

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Artinian duo rings and self-duality

Wei Min Xue

Proc. Amer. Math. Soc. 105 (1989), 309-313

DOI: https://doi.org/10.1090/S0002-9939-1989-0938916-5

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A characterization of weak pseudoconvexity

Akira Sakai

Proc. Amer. Math. Soc. 105 (1989), 314-316

DOI: https://doi.org/10.1090/S0002-9939-1989-0933520-7

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On a domain characterization of Schrödinger operators with gradient magnetic vector potentials and singular potentials

Jerome A. Goldstein and Roman Svirsky

Proc. Amer. Math. Soc. 105 (1989), 317-323

DOI: https://doi.org/10.1090/S0002-9939-1989-0931731-8

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Coefficients of symmetric functions of bounded boundary rotation

Wolfram Koepf

Proc. Amer. Math. Soc. 105 (1989), 324-329

DOI: https://doi.org/10.1090/S0002-9939-1989-0930244-7

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Completely bounded linear extensions of operator-valued functions on $^ *$-semigroups

Ching Yun Suen

Proc. Amer. Math. Soc. 105 (1989), 330-334

DOI: https://doi.org/10.1090/S0002-9939-1989-0931737-9

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A recurrence related to trees

Donald E. Knuth and Boris Pittel

Proc. Amer. Math. Soc. 105 (1989), 335-349

DOI: https://doi.org/10.1090/S0002-9939-1989-0949878-9

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On projections in power series spaces and the existence of bases

Jörg Krone

Proc. Amer. Math. Soc. 105 (1989), 350-355

DOI: https://doi.org/10.1090/S0002-9939-1989-0933516-5

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On compact and bounding holomorphic mappings

Mikael Lindström

Proc. Amer. Math. Soc. 105 (1989), 356-361

DOI: https://doi.org/10.1090/S0002-9939-1989-0933517-7

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Sums and products of Hilbert spaces

Jesús M. F. Castillo

Proc. Amer. Math. Soc. 105 (1989), 362-366

DOI: https://doi.org/10.1090/S0002-9939-1989-99953-3

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Well-bounded and scalar-type spectral operators on spaces not containing $c_ 0$

Ian Doust

Proc. Amer. Math. Soc. 105 (1989), 367-370

DOI: https://doi.org/10.1090/S0002-9939-1989-0939963-X

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Powers’s binary shifts on the hyperfinite factor of type $\textrm {II}_ 1$

Masatoshi Enomoto and Yasuo Watatani

Proc. Amer. Math. Soc. 105 (1989), 371-374

DOI: https://doi.org/10.1090/S0002-9939-1989-0938911-6

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Lack of uniform stabilization for noncontractive semigroups under compact perturbation

R. Triggiani

Proc. Amer. Math. Soc. 105 (1989), 375-383

DOI: https://doi.org/10.1090/S0002-9939-1989-0953013-0

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Some Fourier-Stieltjes coefficients revisited

Sylvester Reese

Proc. Amer. Math. Soc. 105 (1989), 384-386

DOI: https://doi.org/10.1090/S0002-9939-1989-0938913-X

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Approximation of analytic multifunctions

Zbigniew Slodkowski

Proc. Amer. Math. Soc. 105 (1989), 387-396

DOI: https://doi.org/10.1090/S0002-9939-1989-0977924-5

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A generalized Poincaré inequality for Gaussian measures

William Beckner

Proc. Amer. Math. Soc. 105 (1989), 397-400

DOI: https://doi.org/10.1090/S0002-9939-1989-0954373-7

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$L^ 2$-boundedness of spherical maximal operators with multidimensional parameter sets

Young-Hwa Ha

Proc. Amer. Math. Soc. 105 (1989), 401-411

DOI: https://doi.org/10.1090/S0002-9939-1989-0955460-X

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On Tchebysheff systems

Kazuaki Kitahara

Proc. Amer. Math. Soc. 105 (1989), 412-418

DOI: https://doi.org/10.1090/S0002-9939-1989-0943794-4

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Optimal lower bound for the gap between the first two eigenvalues of one-dimensional Schrödinger operators with symmetric single-well potentials

Mark S. Ashbaugh and Rafael Benguria

Proc. Amer. Math. Soc. 105 (1989), 419-424

DOI: https://doi.org/10.1090/S0002-9939-1989-0942630-X

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A characterization of complex hypersurfaces in $\textbf {C}^ m$

Marcos Dajczer

Proc. Amer. Math. Soc. 105 (1989), 425-428

DOI: https://doi.org/10.1090/S0002-9939-1989-0946632-9

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Finiteness of index and total scalar curvature for minimal hypersurfaces

Johan Tysk

Proc. Amer. Math. Soc. 105 (1989), 429-435

DOI: https://doi.org/10.1090/S0002-9939-1989-0946639-1

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Preorders compatible with probability measures defined on a Boolean algebra

M. G. Schwarze

Proc. Amer. Math. Soc. 105 (1989), 436-442

DOI: https://doi.org/10.1090/S0002-9939-1989-0935109-2

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A counterexample to the conjecture of Woess on simple random walks on trees

Kenneth A. Berman and Mokhtar Konsowa

Proc. Amer. Math. Soc. 105 (1989), 443-449

DOI: https://doi.org/10.1090/S0002-9939-1989-0936772-2

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Conditional Yeh-Wiener integrals with vector-valued conditioning functions

Chull Park and David Skoug

Proc. Amer. Math. Soc. 105 (1989), 450-461

DOI: https://doi.org/10.1090/S0002-9939-1989-0960650-6

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There can be $C^ *$-embedded dense proper subspaces in $\beta \omega -\omega$

Eric K. van Douwen, Kenneth Kunen and Jan van Mill

Proc. Amer. Math. Soc. 105 (1989), 462-470

DOI: https://doi.org/10.1090/S0002-9939-1989-0977925-7

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Generalized unknotting operations and tangle decompositions

Tsuyoshi Kobayashi

Proc. Amer. Math. Soc. 105 (1989), 471-478

DOI: https://doi.org/10.1090/S0002-9939-1989-0977926-9

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Smooth $2$-knots in $S^ 2\times S^ 2$ with simply-connected complements are topologically unique

Yoshihisa Sato

Proc. Amer. Math. Soc. 105 (1989), 479-485

DOI: https://doi.org/10.1090/S0002-9939-1989-0940880-X

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Fibrations that are cofibrations. II

Juan M. Alonso

Proc. Amer. Math. Soc. 105 (1989), 486-490

DOI: https://doi.org/10.1090/S0002-9939-1989-0977927-0

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Dimension of dense subalgebras of $C(X)$

Juan B. Sancho de Salas and Ma. Teresa Sancho de Salas

Proc. Amer. Math. Soc. 105 (1989), 491-499

DOI: https://doi.org/10.1090/S0002-9939-1989-0929426-X

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$\kappa$-metrizable spaces, stratifiable spaces and metrization

J. Suzuki, K. Tamano and Y. Tanaka

Proc. Amer. Math. Soc. 105 (1989), 500-509

DOI: https://doi.org/10.1090/S0002-9939-1989-0933521-9

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A remark on the normality of infinite products

Keiko Chiba

Proc. Amer. Math. Soc. 105 (1989), 510-512

DOI: https://doi.org/10.1090/S0002-9939-1989-0933513-X

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A $4$-color theorem for surfaces of genus $g$

Kenneth A. Berman and Jerome L. Paul

Proc. Amer. Math. Soc. 105 (1989), 513-522

DOI: https://doi.org/10.1090/S0002-9939-1989-0949874-1

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Functions of exponential type and separated sequences

David C. Ullrich

Proc. Amer. Math. Soc. 105 (1989), 523-524

DOI: https://doi.org/10.1090/S0002-9939-1989-0977928-2

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