Contents
Book Reviews
W. E. Baylis Theoretical methods in the physical sciences: an introduction to problem solving using Maple V (Birkhäuser, Basel, Berlin, Boston1994) 304 pp, (a floppy disk is included), softcover, 3 7643 3715 X, £36.
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- 20 January 2009, pp. 359-360
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Research Article
A simple construction of exponential bases in L2 of the union of several intervals
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- 20 January 2009, pp. 171-177
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It is proved that every space L2 (I1, ∪ I2), where I1 and I2 are finite intervals, has a Riesz basis of complex exponentials
, {λk} a sequence of real numbers. A partial result for the corresponding problem for n≧3 finite intervals is also obtained.
, {λOpen surfaces with congruent geodesics
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- 20 January 2009, pp. 179-183
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The aim of this paper is to prove the Theorem: Let M be a complete non compact surface without boundary in the euclidean space
3. We suppose that all geodesies of M are congruent. Then M is an affine plane in 3.
Book Reviews
E. I. Khukhro Nilpotent groups and their automorphisms (de Gruyter Expositions in Mathematics Vol. 8, de Gruyter, Berlin, New York1993) 252pp., 3 11 013672 4, about £90.
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- 20 January 2009, p. 543
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Front matter
PEM volume 38 issue 2 Cover and Front matter
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- 20 January 2009, pp. f1-f2
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Research Article
Projective resolutions for graph products
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- 20 January 2009, pp. 185-188
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Let Γ be a finite graph together with a group Gv at each vertex v. The graph productG(Γ) is obtained from the free product of all Gv by factoring out by the normal subgroup generated by
for all adjacent v, w.In this note we construct a projective resolution for G(Γ) given projective resolutions for each Gv, and obtain some applications.
for all adjacent Book Reviews
L. Hörmander Notions of convexity (Progress in Mathematics Vol. 127, Birkhäuser, Basel, Berlin, Boston1994) 424 pp., 3 7643 3799 0, £38.
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- 20 January 2009, pp. 543-544
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Back matter
PEM volume 38 issue 2 Cover and Back matter
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- 20 January 2009, pp. b1-b2
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Book Reviews
K. W. Morton and D. F. Mayers Numerical solution of partial differential equations (Cambridge University Press, Cambridge1994), 227 pp., hardcover: 0 521 41855 0, £35.00, paperback: 0 5214 2922 6, £13.95.
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- 20 January 2009, pp. 544-545
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V. Kiryakova Generalized fractional calculus and applications (Pitman Research Notes in Mathematics Vol. 301, Longman1994), 388 pp., 0 582 21977 9, £39.
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- 20 January 2009, pp. 189-190
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S. Roman Field theory (Graduate Texts in Mathematics, Vol. 158, Springer-VerlagBerlin–Heidelberg–New York–London–Paris–Tokyo–Hong Kong1995), 272 pp., softcover 0 387 94408 7, £21.00
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- 20 January 2009, pp. 545-546
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P. M. Neumann, G. A. Stoy and E. C. Thompson Groups and geometry (Oxford University Press, Oxford1994), x + 254 pp., hardback 0 19 853452 3, £40; paper 0 19 853451 5, £19.50.
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- 20 January 2009, pp. 190-191
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Front matter
PEM volume 38 issue 1 Cover and Front matter
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- 20 January 2009, pp. f1-f2
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PEM volume 38 issue 3 Cover and Front matter
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- 20 January 2009, pp. f1-f2
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Back matter
PEM volume 38 issue 3 Cover and Back matter
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- 20 January 2009, pp. b1-b7
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PEM volume 38 issue 1 Cover and Back matter
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- Published online by Cambridge University Press:
- 20 January 2009, pp. b1-b2
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