Strong normality and normality for difference fields.
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Ronald P. Infante (1980)
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We give a transparent proof that difference Picard-Vessiot theory is a part of the general difference Galois theory. We apply the proof to iterative q-difference Picard-Vessiot theory to show that Picard-Vessiot theory for iterative q-difference field extensions is in the scope of the general Galois theory of Heiderich. We also show that Picard-Vessiot theory is commutative in the sense that studying linear difference-differential equations, no matter how twisted the operators are, we...
Szeto, George, Xue, Lianyong (2000)
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The problem of the construction of number fields with Galois group over Q a given finite groups has made considerable progress in the recent years. The aim of this paper is to survey the current state of this problem, giving the most significant methods developed in connection with it.
Szeto, George, Xue, Lianyong (2001)
International Journal of Mathematics and Mathematical Sciences
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Szeto, George, Xue, Lianyong (2001)
International Journal of Mathematics and Mathematical Sciences
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Szeto, George, Xue, Lianyong (2002)
International Journal of Mathematics and Mathematical Sciences
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