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Chapter
O
O-Direct Union of semi-groups with zero - The semi-group obtained from the given family S α of semi-groups with zero, pairwise intersecting at this zero, by specifying o...
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Chapter
G
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Chapter
M
Editorial comments. A discrete-time stochastic process (X n ) n∈z is m-dependent if for all k the joint stochastic variables (X
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Chapter
D
δ-σ-OPERATION - A set-theoretic operation, the result of its application to a sequence (E n ) of sets can be noted thus:
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Chapter
C
X 2-DISTRIBUTION - See ‘Chi-squared’ distribution.
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Chapter
P
A group which has a normal series such that the order of every factor contains at most one prime from π (π is a set of prime numbers). The class of π-separable groups contains the class of π-solvable groups (cf.
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Chapter
H
A Hausdorff space which, under any topological imbedding into an arbitrary Hausdorff space Y, is a closed set in Y. The characteristic property of an H-closed space is that any open covering of the space contains...
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Chapter
L
The lambda calculus was introduced in 1932 – 1933 by A. Church [A3] as part of a theory intended as a foundation for mathematics. This foundational theory consisted of a part dealing with logical symbols and r...
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Chapter
R
Regular Ring - A regular ring (in the sense of von Neumann) admitting an involutory anti-automorphism α→α* such that αα =0 implies α=0. An idempotent e of a *-regular ring is called a projec...
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Chapter
B
AMS 1980 Subject Classification: 62EXX
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Chapter
M
A second-order partial differential equation of the form <m:math display="block"> <m:mrow> <m:mi>r</m:mi><m:mi>t</m:mi><m:mo>−</m:mo><...
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Chapter
E
ϵ-ENTROPY of a set in a metric space - The logarithm to the base 2 of the smallest number of points in an ϵ-net for this set. In other words, the ϵ-entropy ℋϵ(C, X) of a set C lying in a metric space (X, ρ)
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Chapter and Conference Paper
The problem of realization of homology classes from Poincare up to the present
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Article
Relations in the piecewise-linear cobordism ring
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Article
Realization of homology classes of PL-manifolds with singularities
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Article
Exactness theorems in the cohomology theories MU, BP, and P(n)
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Article
On normal invariants of certain manifolds
A method is presented for computing the set of homotopy classes [X, G/PL], where X is a finite CW complex satisfying certain homological conditions. The result obtained is applied to compute normal invariants ...
