## Vol 83, No 2 (1998)

### Table of Contents

#### Articles

 Some noteworthy examples of zero divisors in infinite rings II Howard E. Bell, Abraham A. Klein 161-168
 A lattice of subgroups that is not embeddable into the subgroup lattice of an abelian group E. W. Kiss, P. P. Pálfy 169-176
 Algebras with vanishing $\mathrm{Ext}^2\ (X,X)$ G. Bolaños, J. A. de la Peña 177-191
 Partitions of $R^3$ into curves M. Jonsson, J. Wästlund 192-204
 Measure homology Søren Kold Hansen 205-219
 On the volume of a small extrinsic ball in a hypersurface of the hyperbolic space Francisco J. Carreras, Antonio M. Naveira 220-234
 Logarithmic differential forms and the cohomology of the complement of a divisor Martin P. Holland, David Mond 235-254
 A note on the local invertibility of Sobolev functions Roberto van der Putten 255-264
 Two problems on potential theory for unbounded sets U. Cegrell, S. Kolodziej, N. Levenberg 265-276
 Hahn decomposition for the Riesz charge of $\delta$-subharmonic functions Mikhail Sodin 277-282
 Harmonic measure and hyperbolic distance in John disks Kiwon Kim, Navah Langmeyer 283-299
 Weighted tangential boundary limits of subharmonic functions on domains in ${R^n}$ ${(n\geq2)}$ Manfred Stoll 300-308
 On the fundamental solution for the real Monge-Ampère operator Johan Thorbiörnson, Zbigniew Blocki 309-319
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