Geodesic

Tome 12 (1969) no. 2

Sommaire

Solution to a Matroid Problem Posed by D. J. A. Welsh
p. 129-131
An Approximation to {X, Y}
p. 133-137
Relations between Finite Homology and Homotopy
p. 139-150
Six and Seven Dimensional Non-Lattice Sphere Packings
p. 151-155
On Topological Invariants of the Product of Graphs
p. 157-166
A Characterization of Modularity forCongruence Lattices of Algebras*
p. 167-173
A Note on an Equivalence Relation on aPurely Inseparable Field Extension
p. 175-178
Subaffine Schemes*
p. 179-181
The Equality of a Manifold's Rank and Dimension
p. 183-184
λ(n)-Parameter Families
p. 185-191
An Application of a Theorem of J. Czipszer and G. Freud to a Problem of Simultaneous Approximation
p. 193-201
Hamiltonian Systems with Spin
p. 203-208
Non-Smooth Geodesic Flows and Classical Mechanics
p. 209-212
On a Class of Semigroups
p. 213-215
A Commutator Formula for a Pair of Subgroups and A Theorem of Blackburn
p. 217-219
Polynomials with Irreducible Factors of Specified Degree
p. 221-223
On a Theorem of Cutler
p. 225-227
-Δ is Positive Definite on a "Spiny Urchin"
p. 229-231
On A Conjecture of Conway
p. 233-234
Incomplete Diagonals of Latin Squares
p. 235
Topology and Order by Leopoldo Nachbin. Van Nostrand Mathematical Studies, Van Nostrand 1965 (Princeton), vi + 122 pages. U.S. $2.50.
p. 242-244
Problems for Solution
p. 236-237
Solutions
p. 237-240
Gesammelte Abhandlungen by H. Minkowski. Chelsea Publishing Co., New York, 1967. xxxi +371 + iv + 465 pages andtwo portraits of the author.
p. 241
Generalized Functions, Volume 5, Integral Geometry and Representation Theory, by I. M. Gel'fand, M. I. Graev and N. Ya Vilenkin. Translated from the Russian by Eugene Saletan. Academic Press, New York and London, 1966. xviii + 449 pages.
p. 252-254
Thesis Abstract
p. 255
Some Properties Related to Compactness, by J. van der Slot. Mathematical Centre Tracts v. 19, Mathematisch Centrum Amsterdam 1968. 56 pages. Paperback.
p. 245
Theory of Optimum Aerodynamic Shapes, A. Miele, editor. Academic Press, New York, 1965. xix+455 pages. U.S. $16.50.
p. 250
Problems and solutions in ordinary differential equations, by F. Brauer and J. A. Nohel. W. A. Benjamin, Inc., New York, 1968.
p. 245-246
Scattering Theory, by Peter D. Lax and Ralph S. Phillips. Academic Press (1967).
p. 247-248
Nonlinear Prograrriming, by H. P. Künzi and W. Krelle, in collaboration with W. Oettli. Translated by F. Levin. Blaisdell Publishing Co., Waltham, Mass. 1966 xiv + 240 pages. U.S. $8.50.
p. 251-252
Systems of Singular Integral Equations, by N. P. Vekua. Translated by A. G. Gibbs and G. M. Simmons. P. Noordhoff, Groningen, 1967, 216 pages.
p. 246-247
Perturbation Methods in Applied Mathematics, by Julian D. Cole. Blaisdell Publishing Company, Waltham, Massachusetts, 1968. 260 pages. U.S. $9.50.
p. 248-249
Stability of Motion, by Wolfgang Hahn. Springer-Verlag, New York Inc., 1967. U.S. $19.80.
p. 250-251
Twelfth Biennial International Seminar of the Canadian Mathematical Congress
p. 256
Collected Papers of G. H. Hardy, Volume 2. Edited by a committee appointed by the London Mathematical Society, Oxford 1967, 702 pages. Can $18.
p. 241-242