Screening transformations for two-dimensional structure constants
نویسندگان
چکیده
منابع مشابه
Extension Constants of Unconditional Two-Dimensional Operators
It is shown that the (absolute) extension constant e(T) of an operator T such that TG, = h,v,, k = 1,2, for some unconditional basis (ol, r;,> of a two-dimensional real normed space is less than or equal to (1~~1 + IA,1 + 2 AT IA,h,J + Ai )/3. In fact, it is demonstrated that e(T) is attained by exactly one unconditional two-dimensional space (up to an isometry).
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ژورنال
عنوان ژورنال: Philosophical Magazine B
سال: 1998
ISSN: 1364-2812,1463-6417
DOI: 10.1080/13642819808206740