78,985 research outputs found
Upper Cohen-Macaulay Dimension
No full textIn this paper, we define a homological invariant for finitely generated modules over a commutative noetherian local ring, which we call upper Cohen-Macaulay dimension. This invariant is quite similar to Cohen-Macaulay dimension that has been introduced by Gerko. Also we
define a homological invariant with respect to a local homomorphism of local rings. This invariant links upper Cohen-Macaulay dimension with Gorenstein dimension.</p
Photographs: Trip to USSR (Box 1, Folder 2)
No full textThe folder contains photographs taken by Kansas City, Missouri rabbi, Alan L. Cohen, during his trip to Moscow, Leningrad, and Riga in 1989, including photographs of a protest demonstration that a group of Refuseniks organized in front of the Moscow Kremlin.Digital ImageDigital finding aid
Photographs: Trip to USSR (Box 1, Folder 3)
No full textThe folder contains photographs taken by Kansas City, Missouri rabbi, Alan L. Cohen, during his trip to Moscow, Leningrad, and Riga in 1989, including photographs of a protest demonstration that a group of Refuseniks organized in front of the Moscow Kremlin.Digital ImageDigital finding aid
Stability analysis of impulsive stochastic Cohen–Grossberg neural networks with mixed time delays
No full textThis is the post print version of the article. The official published version can be obtained from the link - Copyright 2008 Elsevier LtdIn this paper, the problem of stability analysis for a class of impulsive stochastic Cohen–Grossberg neural networks with mixed delays is considered. The mixed time delays comprise both the time-varying and infinite distributed delays. By employing a combination of the M-matrix theory and stochastic analysis technique, a sufficient condition is obtained to ensure the existence, uniqueness, and exponential p-stability of the equilibrium point for the addressed impulsive stochastic Cohen–Grossberg neural network with mixed delays. The proposed method, which does not make use of the Lyapunov functional, is shown to be simple yet effective for analyzing the stability of impulsive or stochastic neural networks with variable and/or distributed delays. We then extend our main results to the case where the parameters contain interval uncertainties. Moreover, the exponential convergence rate index is estimated, which depends on the system parameters. An example is given to show the effectiveness of the obtained results.This work was supported by the Natural Science Foundation of CQ CSTC under grant 2007BB0430, the Scientific Research Fund of Chongqing Municipal Education Commission under Grant KJ070401, an International Joint Project sponsored by the Royal Society of the UK and the National Natural Science Foundation of China, and the Alexander von Humboldt Foundation of Germany
Audiocassette: "Gorodetsky Signatures 19/09/84; Pam Cohen-Usoskin" : Pamela B. Cohen Papers (P-897) box 46 tape 61
No full textThe recordings found in this collection contain notes, opinions, statements and allegations that may or may not be substantiated. American Jewish Historical Society and the Center for Jewish History do not represent or endorse the accuracy or reliability of any findings, conclusions, recommendations, opinions or statements expressed in the recordings.Digital recordingRussianDigital finding aid available
Audiocassette: "Burshtein; Alla P." : Pamela B. Cohen Papers (P-897) box 46 tape 57
No full textThe recordings found in this collection contain notes, opinions, statements and allegations that may or may not be substantiated. American Jewish Historical Society and the Center for Jewish History do not represent or endorse the accuracy or reliability of any findings, conclusions, recommendations, opinions or statements expressed in the recordings.Digital recordingRussianDigital finding aid available
Cohen, Pamela and Leonard Trip to the U.S.S.R. (98 digital images)
No full textPhotographs within the folder were taken during Pamela B. Cohen's travels in the U.S.S.R. and during various events related to the American Soviet Jewry Movement.Digital ImageDigital finding aid
Audiocassette: "Evgeniy Gurevich Eduard" : Pamela B. Cohen Papers (P-897) box 46 tape 83
No full textThe recordings found in this collection contain notes, opinions, statements and allegations that may or may not be substantiated. American Jewish Historical Society and the Center for Jewish History do not represent or endorse the accuracy or reliability of any findings, conclusions, recommendations, opinions or statements expressed in the recordings.Digital recordingRussianDigital finding aid available
Audiocassette: "Shapiro Case; Tanya (Tatiana Zunshane)" : Pamela B. Cohen Papers (P-897) box 46 tape 84
No full textThe recordings found in this collection contain notes, opinions, statements and allegations that may or may not be substantiated. American Jewish Historical Society and the Center for Jewish History do not represent or endorse the accuracy or reliability of any findings, conclusions, recommendations, opinions or statements expressed in the recordings.Digital recordingRussianDigital finding aid available
Audiocassette: "Natasha Khassina" : Pamela B. Cohen Papers (P-897) box 46 tape 87
No full textThe recordings found in this collection contain notes, opinions, statements and allegations that may or may not be substantiated. American Jewish Historical Society and the Center for Jewish History do not represent or endorse the accuracy or reliability of any findings, conclusions, recommendations, opinions or statements expressed in the recordings.Digital recordingRussianDigital finding aid available
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