3 Lot X be the unit circle in R; that is, X = {(r, y) : + y? = 1} and has the subspace topology. (i) Show that X\{(1,0)} is homeomorphic to the open interval (0,1). (ii) Deduce that X (0, 1) and X 0, 1]. (iii) Observing that for every point a EX, the subspace X\{a} is connected, show that X (0,1). (iv) Deduce that X is not homeomorphic to any interval.
3 Lot X be the unit circle in R; that is, X = {(r, y) : + y? = 1} and has the subspace topology. (i) Show that X\{(1,0)} is homeomorphic to the open interval (0,1). (ii) Deduce that X (0, 1) and X 0, 1]. (iii) Observing that for every point a EX, the subspace X\{a} is connected, show that X (0,1). (iv) Deduce that X is not homeomorphic to any interval.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 63E
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