Tr. Geom. Semin., 1997, Volume 23

Trudy Geometricheskogo Seminara

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1997, Volume 23

General information

Contents

Trudy Geometricheskogo Seminara

	Preface A. P. Shirokov		5–6
	On the space of essential infinitesimal deformations of a manifold over the algebra of $k$-plural numbers A. V. Boyarshinova		7–21
	On the bicentenary of N. I. Lobachevskii. Lessons and results V. V. Vishnevskii		23–32
	The Spencer complex for manifolds over algebras T. I. Gaisin		33–41
	On $K$-contact metric structures N. V. Ermak		43–55
	First integrals of geodesic equations of $h$-spaces of type [51] Z. Kh. Zakirova		57–64
	Godbillion–Vey classes for a one-dimensional manifold over a local algebra M. A. Malakhaltsev		65–76
	Invariant characteristics of some classes of almost Hermitian structures V. I. Panzhenskij		77–83
	Conformal Poincaré interpretation of a degenerate geometry in a dual variable plane, and Norden's normalization theory S. Yu. Petropavlovskaya		85–98
	Connections in the bundles associated with the manifold of pairs of tangent and contact planes of a surface K. V. Polyakova		99–112
	Foliations on closed geodesics with positive mixed sectional curvature and special behaviour of $L$-Jacobi fields V. Yu. Rovenskiĭ		113–123
	On the properties of the Riemannian curvature tensor of the linear extension of a quasi-Sasakian manifold E. V. Rodina		125–138
	Decomposition of a jet bundle of differentiable mappings into a Whitney sum of tangent bundles A. Ya. Sultanov		139–148
	Elements of differential geometry over Banach algebras V. E. Fomin		149–164
	Reduction of Hamiltonian systems with cyclic coordinates, and projectability in bundles B. N. Shapukov		165–174
	Linear connections of holonomic and nonholonomic smooth manifolds Yu. I. Shevchenko		175–186
	The space $H_4$ and quaternion algebra A. P. Shirokov		187–198
	Atiyah-Molino classes of a smooth manifold over a local algebra $\mathbb A$ as obstacles to the continuation of transversal connections to $\mathbb A$-smooth connections V. V. Shurygin		199–210
	An interrelation between geometries of a third-order tangent bundle and the Whitney sum E. P. Shustova		211–221
	Special $\mathcal L_n$ that admit nontrivial $J_0$ Sh. A. Yafarov		223–230
	Aleksandr Petrovich Shirokov (on the occasion of his seventieth birthday) B. N. Shapukov, V. R. Kaigorodov		231–244
	Report of the International Jury on Lobachevskii Medal Awarding in 1997		245–249
	Information on sessions of Geometrical Seminar of Kazan University (1990, September – 1997, June)		250–254

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