ON THE CLOSURE OF LINEAR COMBINATION OF TWO SUBALGEBRAS OF CONTINUOUS FUNCTIONS

被引:0
作者
Turovskii, Andrew [1 ]
机构
[1] NAS Azerbaijan, Inst Math & Mech, 9 F Agayev Str, AZ-1141 Baku, Azerbaijan
来源
PROCEEDINGS OF THE INSTITUTE OF MATHEMATICS AND MECHANICS | 2005年 / 23卷 / 31期
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中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let A be a set of continuous real or complex functions defined on a compact K. In this work we study conditions for which the closure (A) over bar is the algebra C(K) of all continuous functions on K. In [1] the case of a subalgebra of real functions and in [2] the case when A is a lattice that is the sum of two subalgebras of real functions were considered. For complex functions, see also [1] for the case when A is the sum of a subalgebra and its complex adjoint one and, simultaneously, (A) over bar is a subalgebra itself. Here we consider the cases of the sum of two subalrebras and of linear combinations of two subalgebras.
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页码:121 / 126
页数:6
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