Results 241 to 250 of about 2,084 (272)

Differential perturbations and $ D_\infty$-differential modules

Sbornik: Mathematics, 2001
Let \(K\) be a commutative ring. A \(D_\infty\)-differential module \((X,d^*)\) is a \(K\)-module \(X\) together with a \(D_\infty\) differential, that is a family of \(K\) homomorphisms \(\{d^i:X\to X\), \(i\geq 0\}\) such that \(\sum_{i+j=k} d^id^j =0\), \(\forall k\geq 0\). The author gives some properties of \(D_\infty\)-differential modules (which
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Computations in differential and difference modules

Acta Applicandae Mathematicae, 1989
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Differential étale extensions and differential modules over differential rings

Advances in Applied Mathematics, 2016
An extension of rings \(R/F\) is defined to be formally étale if it satisfies the following lifting property: For all surjective homomorphisms of \(F\)-algebras \(f:A\to S\) whose kernel \(I=\mathrm {ker}(f)\) satisfies \(I^2=0\) and all \(F\)-algebra homomorphisms \(g: R\to S\) there is a lifting of \(g\) to \(h: R\to A\), i.e.
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Free resolutions for differential modules over differential algebras

Journal of Mathematical Sciences, 2008
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Kadeishvili, T., Real, P.
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Differentiation therapy in glioma – screening for modulators of differentiation commitment

2017
Objectives: It is now clear that neural stem cell identity in a subset of tumour cells is key to malignancy in high grade glioma, and probably also in lower grade lesions. Inducing stable therapeutic differentiation commitment in the glioma NS cells which persist after surgical resection offers the [for full text, please go to the a.m. URL]
Bulstrode, H, Pollard, S
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Differential Modules and Ramification

2004
Differential modules and ramification is the subject of this chapter. With regard to the principal properties of differential modules, we refer to chapter 16 of Eisenbud’s book [63], and add some more results in section 1. After dealing with norms and traces in section 2, we introduce the notion of formally unramified and unramified extensions of rings
K. Kiyek, J. L. Vicente
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Business Module Differentiation

2007
SINA, SOHU, and NETEASE have been regarded as the most successful general Web portals in the Chinese market. However, they have quite different strategies in their business modules, which makes them quite different in terms of their revenue constitution. What are the major reasons and what will be the future direction for Chinese Web portals?
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Change of generators in differential modules

Programming and Computer Software, 2000
A. V. Lapunov, V. A. Mityunin
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Differential six-port modulator

2011 International Conference on Wireless Communications and Signal Processing (WCSP), 2011
Owais Bajpai, Joakim Osth, Shaofang Gong
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Some remarks on Kähler differentials and ordinary differentials in nonlinear control theory

Systems and Control Letters, 2011
Miroslav Halas, Ulle Kotta
exaly