Does there exist a regular closed curve y in the plane R² which cuts the plane into 3 regions, i.e. such that the complement of the image of y in R² consists of 3 connected components? Select one: a. Yes, there exists such a curve. In fact, there exists a curve with these properties with constant curvature. O b. Yes, there exists such a curve, but any such curve has non-constant curvature. O c. No, no such curve exists, by the Jordan curve theorem. O d. No, no such curve exists, by Hopf's Umlaufsatz. O e. No, no such curve exists, by Fenchel's theorem. O f. No, no such curve exists, by the isoperimetric inequality. O g. No, no such curve exists, by Green's theorem. Oh. No, no such curve exists, by the four vertex theorem. O i. No, no such curve exists, by Gauss' Theorema Egregium. O j. No, no such curve exists, by the Gauss-Bonnet theorem.

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Author:Erwin Kreyszig
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Does there exist a regular closed curve y in the plane R² which cuts the plane into 3 regions, i.e. such that the complement of the image of y in R²
consists of 3 connected components?
Select one:
O a. Yes, there exists such a curve. In fact, there exists a curve with these properties with constant curvature.
O b. Yes, there exists such a curve, but any such curve has non-constant curvature.
O c. No, no such curve exists, by the Jordan curve theorem.
O d.
No, no such curve exists, by Hopf's Umlaufsatz.
e.
No, no such curve exists, by Fenchel's theorem.
O f.
No, no such curve exists, by the isoperimetric inequality.
g.
No, no such curve exists, by Green's theorem.
Oh.
No, no such curve exists, by the four vertex theorem.
O i.
No, no such curve exists, by Gauss' Theorema Egregium.
O j. No, no such curve exists, by the Gauss-Bonnet theorem.
Transcribed Image Text:Does there exist a regular closed curve y in the plane R² which cuts the plane into 3 regions, i.e. such that the complement of the image of y in R² consists of 3 connected components? Select one: O a. Yes, there exists such a curve. In fact, there exists a curve with these properties with constant curvature. O b. Yes, there exists such a curve, but any such curve has non-constant curvature. O c. No, no such curve exists, by the Jordan curve theorem. O d. No, no such curve exists, by Hopf's Umlaufsatz. e. No, no such curve exists, by Fenchel's theorem. O f. No, no such curve exists, by the isoperimetric inequality. g. No, no such curve exists, by Green's theorem. Oh. No, no such curve exists, by the four vertex theorem. O i. No, no such curve exists, by Gauss' Theorema Egregium. O j. No, no such curve exists, by the Gauss-Bonnet theorem.
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