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Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.2: Mappings
Problem 19E
Related questions
Question
Prove using the below definition
1.1 Continuity
Definition 1.1.1
Let (X, dX) and (Y, dY ) be metric spaces and A ⊆ X. A function f : A → Y
is said to be continuous at a point a ∈ A, if for every > 0 there exist some
δ > 0 such that
dY (f(x), f(a)) <
whenever
dX(x, a) < δ, a ∈ A.
In this connection f is said to be continuous on A if it is continuous on
every point of A.
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