
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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![2. Let be the equivalence relation on the plane R2 having the following equivalence classes:
[(0,0)] = {(r,y): √²+y² <1}, the open unit disc
[(x,y)] = {(z,y)} for all other (r, y) in R²
●
For each subset of the quotient space R2/ given below, determine whether or not it is open by computing its preimage
under the quotient projection p: R2 → R²/.
(a) {[(0,0)]}
(b) {[(y)]: (z,y) EB (0,0)}
(c) {[(x,y)]: (x,y) € B₂(0,0)}](https://content.bartleby.com/qna-images/question/7706589f-c8fe-4c4c-beaf-b106f74f8f75/54271de0-9ce0-4a1e-b721-669d83e571a7/qgiloj_thumbnail.jpeg)
Transcribed Image Text:2. Let be the equivalence relation on the plane R2 having the following equivalence classes:
[(0,0)] = {(r,y): √²+y² <1}, the open unit disc
[(x,y)] = {(z,y)} for all other (r, y) in R²
●
For each subset of the quotient space R2/ given below, determine whether or not it is open by computing its preimage
under the quotient projection p: R2 → R²/.
(a) {[(0,0)]}
(b) {[(y)]: (z,y) EB (0,0)}
(c) {[(x,y)]: (x,y) € B₂(0,0)}
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