Theorem 7.35. Let X and Y be topological spaces. For every y E Y, the subspace X × {y} of X × Y is homeomorphic to X.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
icon
Concept explainers
Topic Video
Question
100%

How do I show 7.35? Could you explain this in great detail? Thank you!

Definition. A function f : X → Y is an embedding if and only if f :X → f(X) is a
homeomorphism from X to f(X), where f(X) has the subspace topology from Y.
Definition. The projection maps nx : X× Y → X and ty : X ×Y → Y are defined
by Tx(x, y) = x and Ay(x, y) = y.
Theorem 7.32. Let X and Y be topological spaces. The projection maps Tx, ty on X×Y
are continuous, surjective, and open.
In fact, the topology on the product space can be characterized as the coarsest
topology that makes the projection maps continuous.
Theorem 7.33. Let X and Y be topological spaces. The product topology on X × Y is the
coarsest topology on X × Y that makes the projection maps Tx,Ty on X × Y continuous.
Theorem 7.35. Let X and Y be topological spaces. For every y E Y, the subspace X ×{y}
of X × Y is homeomorphic to X.
Transcribed Image Text:Definition. A function f : X → Y is an embedding if and only if f :X → f(X) is a homeomorphism from X to f(X), where f(X) has the subspace topology from Y. Definition. The projection maps nx : X× Y → X and ty : X ×Y → Y are defined by Tx(x, y) = x and Ay(x, y) = y. Theorem 7.32. Let X and Y be topological spaces. The projection maps Tx, ty on X×Y are continuous, surjective, and open. In fact, the topology on the product space can be characterized as the coarsest topology that makes the projection maps continuous. Theorem 7.33. Let X and Y be topological spaces. The product topology on X × Y is the coarsest topology on X × Y that makes the projection maps Tx,Ty on X × Y continuous. Theorem 7.35. Let X and Y be topological spaces. For every y E Y, the subspace X ×{y} of X × Y is homeomorphic to X.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Centre, Spread, and Shape of a Distribution
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,