环上迭代洛朗级数代数之间的连续同态
Continuous homomorphisms between algebras of iterated Laurent series over a ring
摘要:
研究了交换环上的迭代洛朗级数代数之间的连续同态。我们给出了一个完整的描述,这样的同态的离散数据所确定的参数的图像。同样地,我们给出了自同态可逆性的一个判据,并给出了逆自同态的一个显式公式。研究了高维剩余在连续同态下的行为。
英文摘要:
We study continuous homomorphisms between algebras of iterated Laurent series over a commutative ring. We give a full description of such homomorphisms in terms of a discrete data determined by the images of parameters. In similar terms, we give a criterion of invertibility of an endomorphism and provide an explicit formula for the inverse endomorphism. We study the behavior of the higher-dimensional residue under continuous homomorphisms.
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