## Vol 66 (1990)

#### Articles

 The Krull-Schmidt theorem for categories of finitely generated modules over valuation domains. Paolo Zanardo 5-11
 Specialization of MacPherson's Chern classes. Gary Kennedy 12-16
 On the homology of $\mathrm{SL}_2$, a complement. Jean-luis Cathelineau 17-20
 Deformations which preserve the non-immersive locus of a map-germ. David Mond 21-32
 Cancellation and non-cancellation amongst products of spherical fibrations. Peter I. Booth 33-43
 Separating plane convex sets. Rafael Hope, Meir Katchalski 44-46
 Algebraic and geometric convergence of Kleinian groups. T. Jorgensen, Marden A. 47-72
 Singular vectors corresponding to imaginary roots in verma modules over affine Lie algebras. F. Malikow 73-90
 The integral weight system for torus actions on spheres with no fixed point. Eldar Straume 91-109
 Order properties of compact maps on $L^p$-spaces associated with von Neumann algebras. Erwin Neuhardt 110-116
 Antiautomorphisms of $B(H)$. P. J. Stacey 117-129
 An extremal problem for polynomials with a prescribed value at a given point of the real axis. Karl-joachim Wirths 130-140
 Amenability for discrete convolution semigroup algebras. J. Duncan, A. L. T. Paterson 141-146
 Some eta-identities arising from theta series. Günter Köhler 147-154
 An abstract characterization of $\omega$-conditional expectations. Carlo Cecchini 155-160
 $\mathscr{D}$-modules et geometrie des tissus de $\mathsf{C}^2$. Alain Hénaut 161-172
 Betti numbers and the integral closure of ideals. Sangki Choi 173-184
 Fixed points of actions of $P$-groups on projective varieties. William Browder 185-196
 On the number of semigroups of natural numbers. Jörgen Backelin 197-215
 The sum of two plane convex $C^\infty$ sets is not always $C^5$. Jan Boman 216-224
 Smoothness of sums of convex sets with real analytic boundaries. Jan Boman 225-230
 Continous trace groupoid $C^*$-algebras. Paul S. Muhly, Dana P. Williams 231-241
 On the spectrum of inner derivations in partial Jordan triples. L. L. Stachó 242-248
 Some natural families of M-ideals. Giles Godefroy, Daniel Li 249-263
 On complex interpolation with an analytic functional. M. J. Carro, Joan Cerdà 264-274
 The convex floating body. Carsten Schütt, Elisabeth Werner 275-290
 Distribution differential equations. Regularization and bending of a rod. Jan Persson 291-300
 A note on hereditary rings or non-singular rings with chain condition. Nguyen V. Dung 301-306
 Leading terms in the heat invariants for the Laplacians of the De Rham signature, and spin complexes. T. P. Branson, P. B. Gilkey, B. Orsted 307-319
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