Suppose C is a class of subsets of $2 and suppose BC 2 satisfies B € σ (C). Show that there exists a countable class CB C C such that B E O (CB). Hint: Define G:= {BC: 3 countable CB C C such that B € σ (CB)}. Show that G is a o-field that contains C.
Suppose C is a class of subsets of $2 and suppose BC 2 satisfies B € σ (C). Show that there exists a countable class CB C C such that B E O (CB). Hint: Define G:= {BC: 3 countable CB C C such that B € σ (CB)}. Show that G is a o-field that contains C.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.3: The Characteristic Of A Ring
Problem 6E
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