22 1. Sets and Events 10. Check that An → A iff 1A→ 1A pointwise.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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22
1. Sets and Events
10. Check that
An → A
iff
1An → 1A
->
pointwise.
Transcribed Image Text:22 1. Sets and Events 10. Check that An → A iff 1An → 1A -> pointwise.
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