## Contents of Volume 12, Number 2

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- Miscellaneous back pages, Bull. Amer. Math. Soc. (N.S.), Volume 12, Number 2 (1985)
- Bull. Amer. Math. Soc.
**12**(1985)

- Miscellaneous front pages, Bull. Amer. Math. Soc. (N.S.), Volume 12, Number 2 (1985)
- Bull. Amer. Math. Soc.
**12**(1985)

- Some extremal functions in Fourier analysis
- Jeffrey D. Vaaler PDF
- Bull. Amer. Math. Soc.
**12**(1985), 183-216

- Equivariant $h$-cobordisms and finiteness obstructions
- Mark Steinberger and James West PDF
- Bull. Amer. Math. Soc.
**12**(1985), 217-220

- Algebraic $K$-theory of poly-(finite or cyclic) groups
- Frank Quinn PDF
- Bull. Amer. Math. Soc.
**12**(1985), 221-226

- Classification of first order theories which have a structure theorem
- Saharon Shelah PDF
- Bull. Amer. Math. Soc.
**12**(1985), 227-232

- Nonlinear stability of shock waves for viscous conservation laws
- Tai-ping Liu PDF
- Bull. Amer. Math. Soc.
**12**(1985), 233-236

- Gel′fand’s problem on unitary representations associated with discrete subgroups of $\{\text \{PSL\}\}\textunderscore 2 (\{\mathbf \{R\}\})$
- Toshikazu Sunada PDF
- Bull. Amer. Math. Soc.
**12**(1985), 237-238

- A new polynomial invariant of knots and links
- P. Freyd, D. Yetter, J. Hoste, W. B. R. Lickorish, K. Millett and A. Ocneanu PDF
- Bull. Amer. Math. Soc.
**12**(1985), 239-246

- On automorphisms of nodal Enriques surfaces
- F. Cossec and I. Dolgachev PDF
- Bull. Amer. Math. Soc.
**12**(1985), 247-249

- A completely integrable Hamiltonian system associated with line fitting in complex vector spaces
- Anthony M. Bloch PDF
- Bull. Amer. Math. Soc.
**12**(1985), 250-254

- A threshold for a caricature of the nerve equation
- H. P. McKean and V. Moll PDF
- Bull. Amer. Math. Soc.
**12**(1985), 255-259

- A generalization of Berger’s almost $\frac {1}{4}$-pinched manifolds theorem. I
- O. Durumeric PDF
- Bull. Amer. Math. Soc.
**12**(1985), 260-264

##
Book Reviews

Book reviews do not contain an abstract. You may
download each review in this issue using the links
below.

- Quadratic differentials, by Kurt Strebel.
- Reviewer: Howard Masur

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 265-267

- Boundary-value problems with free boundaries for elliptic systems of equations, by V. N. Monakhov.
- Reviewer: R. Finn

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 268-270

- Commutative semigroup rings, by Robert Gilmer.
- Reviewer: Jack Ohm

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 270-272

- Differential systems involving impulses, by S. G. Pandit and S. G. Deo.
- Reviewer: O. Hájek

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 272-279

- Einhüllende Algebren halbeinfacher Lie-Algebren, by Jens C. Jantzen.
- Reviewer: David A. Vogan, Jr.

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 279-283

- Complex analysis, a functional analysis approach, by D. H. Luecking and L. A. Rubel.
- Reviewer: R. B. Burckel

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 283-289

- Spectral theory of Banach space operators, by Shmuel Kantorovitz.
- Reviewer: Florian-Horia Vasilescu

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 289-292

- The Cauchy problem, by H. O. Fattorini.
- Reviewer: Jerome A. Goldstein

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 292-294

- Bayes theory, by J. A. Hartigan.
- Reviewer: William D. Sudderth

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 294-297

- Combinatorial enumeration, by Ian P. Goulden and David M. Jackson.
- Reviewer: Ira Gessel

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 297-301

- Semigroups of linear operators and applications to partial differential equations, by A. Pazy.
- Reviewer: Robert H. Martin, Jr.

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 302-305

- Amarts and set function processes, by Allen Gut and Klaus D. Schmidt.
- Reviewer: Louis Sucheston

- Review information PDF
- Bull. Amer. Math. Soc.
**12**(1985), 306-312