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On synthetic and transference properties of group homomorphisms
Bulletin of the London Mathematical Society ( IF 0.8 ) Pub Date : 2020-10-06 , DOI: 10.1112/blms.12424 G. K. Eleftherakis 1
Bulletin of the London Mathematical Society ( IF 0.8 ) Pub Date : 2020-10-06 , DOI: 10.1112/blms.12424 G. K. Eleftherakis 1
Affiliation
We study Borel homomorphisms for arbitrary locally compact second countable groups and for which the measure
is absolutely continuous with respect to , where (respectively, ) is a Haar measure for , (respectively, ). We define a natural mapping from the class of maximal abelian selfadjoint algebra bimodules (masa bimodules) in into the class of masa bimodules in and we use it to prove that if is a set of operator synthesis, then is also a set of operator synthesis and if is a set of local synthesis for the Fourier algebra , then is a set of local synthesis for . We also prove that if is an ‐set (respectively, ‐set), then is an ‐set (respectively, ‐set) and if is the masa bimodule generated by the annihilator of the ideal in , then there exists an ideal such that . If this ideal is an ideal of multiplicity, then is an ideal of multiplicity. In case is a Haar measure for , we show that is equal to the ideal generated by , where .
中文翻译:
群同态的合成与转移性质
我们研究Borel同态 用于任意局部紧凑的第二可数组 和 为此采取的措施
关于...绝对连续 ,在哪里 (分别, )是Haar的度量 , (分别, )。我们定义一个自然映射 来自最大阿贝尔自伴代数双模(masa双模)的类 进入马萨双模 我们用它来证明 是一组运算符综合,然后 也是一组运算符综合,如果 是傅立叶代数的局部合成 , 然后 是针对 。我们还证明,如果 是一个 设置(分别 设置),然后 是一个 设置(分别 设置),如果 是由理想的an灭者生成的masa双模 在 ,那么就存在一个理想 这样 。如果这个理想 是多重理想,然后 是多元化的理想。以防万一 是Haar的一项措施 ,我们证明 等于理想 由...产生 ,在哪里 。
更新日期:2020-10-06
中文翻译:
群同态的合成与转移性质
我们研究Borel同态 用于任意局部紧凑的第二可数组 和 为此采取的措施