Contents of Volume 20, Number 1

All articles in this issue are freely accessible.

View front and back matter from the print issue

Approximating semigroups and the consistency of difference schemes

Gilbert Strang.
Proc. Amer. Math. Soc. 20 (1969), 1-7
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233239

A coefficient inequality for certain classes of analytic functions

F. R. Keogh and E. P. Merkes.
Proc. Amer. Math. Soc. 20 (1969), 8-12
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232926

A theorem on infinite positive matrices

E. Netanyahu and M. Reichaw.
Proc. Amer. Math. Soc. 20 (1969), 13-15
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0236203

A problem of Wiener and the failure of a principle for Fourier series with positive coefficients

Stephen Wainger.
Proc. Amer. Math. Soc. 20 (1969), 16-18
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0236397

Minimal solutions to a class of parabolic partial differential equations

T. Guinn and E. M. Landesman.
Proc. Amer. Math. Soc. 20 (1969), 19-23
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235286

Ellipticity and regularity for periodic nonlinear equations

Robert A. Adams.
Proc. Amer. Math. Soc. 20 (1969), 24-26
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0243191

A uniqueness theorem for some nonlinear boundary value problems

A. Kadish.
Proc. Amer. Math. Soc. 20 (1969), 27-29
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233072

A note on eigenvalues of normal transformations

R. E. L. Turner.
Proc. Amer. Math. Soc. 20 (1969), 30-34
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0240654

Weierstrass points and analytic submanifolds of Teichmueller space

H. M. Farkas.
Proc. Amer. Math. Soc. 20 (1969), 35-38
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232928

A note on the Littlewood-Tauber theorem

M. L. Glasser.
Proc. Amer. Math. Soc. 20 (1969), 39-40
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233111

Normal operators

Myron Goldstein.
Proc. Amer. Math. Soc. 20 (1969), 41-44
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0251214

On a theorem of Fejér and Riesz

F. R. Keogh.
Proc. Amer. Math. Soc. 20 (1969), 45-50
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0247013

Almost convergent and almost summable sequences

Paul Schaefer.
Proc. Amer. Math. Soc. 20 (1969), 51-54
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235340

The approximate divergence operator

Victor L. Shapiro.
Proc. Amer. Math. Soc. 20 (1969), 55-60
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0236623

Comparison theorems and integral inequalities for Volterra integral equations

Paul R. Beesack.
Proc. Amer. Math. Soc. 20 (1969), 61-66
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0234228

Oscillation theorems for linear second order ordinary differential equations

J. W. Macki and J. S. W. Wong.
Proc. Amer. Math. Soc. 20 (1969), 67-72
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235202

Eigenvalue of the square of a function

A. M. Fink.
Proc. Amer. Math. Soc. 20 (1969), 73-74
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0234046

Extending real maps defined on a subset of a disk

B. J. Ball, Jo Ford and E. S. Thomas.
Proc. Amer. Math. Soc. 20 (1969), 75-80
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235538

The area and variation of linearly continuous functions

William P. Ziemer.
Proc. Amer. Math. Soc. 20 (1969), 81-87
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233959

Some properties of a generalized Hausdorff mean

C. W. Leininger.
Proc. Amer. Math. Soc. 20 (1969), 88-96
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0234163

Convergence-preservation criteria for a generalized Hausdorff mean.

C. W. Leininger.
Proc. Amer. Math. Soc. 20 (1969), 97-100
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0234164

Totally bounded sets of precompact linear operators

Theodore W. Palmer.
Proc. Amer. Math. Soc. 20 (1969), 101-106
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235425

Product solutions for simple games. II

T. Parthasarathy.
Proc. Amer. Math. Soc. 20 (1969), 107-114
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0378867

The operator equation $BX-XA=Q$ with self-adjoint $A$ and $B$

Marvin Rosenblum.
Proc. Amer. Math. Soc. 20 (1969), 115-120
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233214

Operators similar to their adjoints

James P. Williams.
Proc. Amer. Math. Soc. 20 (1969), 121-123
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233230

Weak compactness of measures

Benjamin B. Wells.
Proc. Amer. Math. Soc. 20 (1969), 124-130
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0238067

Sums of irreducible operators

Peter A. Fillmore and David M. Topping.
Proc. Amer. Math. Soc. 20 (1969), 131-133
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233226

Charlier spaces of entire functions

Louis de Branges and David Trutt.
Proc. Amer. Math. Soc. 20 (1969), 134-140
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0626531

Fixed-point theorems for certain classes of nonexpansive mappings

L. P. Belluce and W. A. Kirk.
Proc. Amer. Math. Soc. 20 (1969), 141-146
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233341

Density of one graph along another

Jack B. Brown.
Proc. Amer. Math. Soc. 20 (1969), 147-149
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232897

Pointed minimal sets and $S$-regularity

Brindell Horelick.
Proc. Amer. Math. Soc. 20 (1969), 150-156
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235546

On an arcwise connected subgroup of a Lie group

Morikuni Goto.
Proc. Amer. Math. Soc. 20 (1969), 157-162
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233923

A remark on a theorem of A. Weil

Morikuni Goto.
Proc. Amer. Math. Soc. 20 (1969), 163-165
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232888

Continuous derivations on Banach algebras

A. M. Sinclair.
Proc. Amer. Math. Soc. 20 (1969), 166-170
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233207

A theorem on the Hurewicz fiberings

Soon-kyu Kim.
Proc. Amer. Math. Soc. 20 (1969), 171-174
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233356

A lower bound for the dimension of certain $G_{𝛿}$ sets in completely normal spaces

James B. Wilkinson.
Proc. Amer. Math. Soc. 20 (1969), 175-178
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0238283

Structure of hereditarily infinite dimensional spaces

J. M. Yohe.
Proc. Amer. Math. Soc. 20 (1969), 179-184
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0236896

On reconstructing a graph

Robert L. Hemminger.
Proc. Amer. Math. Soc. 20 (1969), 185-187
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232696

A differential in the Adams spectral sequence

Daniel S. Kahn.
Proc. Amer. Math. Soc. 20 (1969), 188-190
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235562

On topological transformation groups

Lloyd Lininger.
Proc. Amer. Math. Soc. 20 (1969), 191-192
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0235544

Valuations on a commutative ring

Merle E. Manis.
Proc. Amer. Math. Soc. 20 (1969), 193-198
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233813

Rigidity of generalized uniserial and Frobenius algebras

S. S. Page.
Proc. Amer. Math. Soc. 20 (1969), 199-202
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0236246

Formations of group and $𝜋$-decomposability

H. Lausch.
Proc. Amer. Math. Soc. 20 (1969), 203-206
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233891

Determinants on semilattices

Bernt Lindström.
Proc. Amer. Math. Soc. 20 (1969), 207-208
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0238738

Tensor products of simple pure inseparable field extensions

J. N. Mordeson and B. Vinograde.
Proc. Amer. Math. Soc. 20 (1969), 209-212
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232758

Self-injective semigroup rings for finite inverse semigroups

R. Wenger.
Proc. Amer. Math. Soc. 20 (1969), 213-216
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232869

Critical groups and the lattice of varieties

John Cossey.
Proc. Amer. Math. Soc. 20 (1969), 217-221
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232824

On quasi-local noetherian rings

Gerhard Michler.
Proc. Amer. Math. Soc. 20 (1969), 222-224
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232796

Note on $QF$-$1$ algebras

J. P. Jans.
Proc. Amer. Math. Soc. 20 (1969), 225-228
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233848

Galois endomorphisms of the torsion subgroup of certain formal groups

Jonathan Lubin.
Proc. Amer. Math. Soc. 20 (1969), 229-231
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232769

Finite groups with pro-normal subgroups

T. A. Peng.
Proc. Amer. Math. Soc. 20 (1969), 232-234
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232850

A remark on Prüfer rings

Edward D. Davis.
Proc. Amer. Math. Soc. 20 (1969), 235-237
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232763

Open mappings and closed subsets of the domain in general metric spaces

James Edgar Keesling.
Proc. Amer. Math. Soc. 20 (1969), 238-245
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0261568

Relative interiors of convex hulls

William E. Bonnice and John R. Reay.
Proc. Amer. Math. Soc. 20 (1969), 246-250
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0234352

A note on maximal locally compact semigroups

James W. Stepp.
Proc. Amer. Math. Soc. 20 (1969), 251-253
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232883

A set whose square can map onto a perfect set

John R. Isbell.
Proc. Amer. Math. Soc. 20 (1969), 254-255
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0232359

An equivalence theorem for embeddings of compact absolute neighborhood retracts

J. L. Bryant and C. L. Seebeck.
Proc. Amer. Math. Soc. 20 (1969), 256-258
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0244972

On stochastic differentials in Hilbert spaces

E. M. Cabaña.
Proc. Amer. Math. Soc. 20 (1969), 259-265
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233436

Dominated estimates of positive contractions

R. V. Chacon and J. Olsen.
Proc. Amer. Math. Soc. 20 (1969), 266-271
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0248327

An operator ergodic theorem for sequences of functions

E. M. Klimko and Louis Sucheston.
Proc. Amer. Math. Soc. 20 (1969), 272-276
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233956

Almost complex submanifolds of the six sphere

Alfred Gray.
Proc. Amer. Math. Soc. 20 (1969), 277-279
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0246332

A canonical linear order for the maximal chains of a tree

James C. Owings.
Proc. Amer. Math. Soc. 20 (1969), 280-283
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0240009

Toeplitz-Hausdorff theorem on numerical ranges

R. Raghavendran.
Proc. Amer. Math. Soc. 20 (1969), 284-285
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233186

A note on absolute summability

J. A. Fridy.
Proc. Amer. Math. Soc. 20 (1969), 285-286
Abstract, references and article information
Full-text PDF Free Access
Request permission to use this material
MathSciNet review: 0233105