The sphere with three ends?












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enter image description here



The preceding image take form Matthias Weber's Classical Minimal Surfaces in Euclidean Space by Examples notes is called the sphere with three ends. But what does it have to do with a sphere and why do we say it has three ends? What is formally the end of a surface?










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  • I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
    – Arthur
    Dec 11 '18 at 14:13


















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enter image description here



The preceding image take form Matthias Weber's Classical Minimal Surfaces in Euclidean Space by Examples notes is called the sphere with three ends. But what does it have to do with a sphere and why do we say it has three ends? What is formally the end of a surface?










share|cite|improve this question






















  • I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
    – Arthur
    Dec 11 '18 at 14:13
















1












1








1


1





enter image description here



The preceding image take form Matthias Weber's Classical Minimal Surfaces in Euclidean Space by Examples notes is called the sphere with three ends. But what does it have to do with a sphere and why do we say it has three ends? What is formally the end of a surface?










share|cite|improve this question













enter image description here



The preceding image take form Matthias Weber's Classical Minimal Surfaces in Euclidean Space by Examples notes is called the sphere with three ends. But what does it have to do with a sphere and why do we say it has three ends? What is formally the end of a surface?







geometry differential-geometry surfaces minimal-surfaces






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asked Dec 11 '18 at 14:09









roi_saumon

41028




41028












  • I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
    – Arthur
    Dec 11 '18 at 14:13




















  • I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
    – Arthur
    Dec 11 '18 at 14:13


















I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
– Arthur
Dec 11 '18 at 14:13






I can't answer your important questions, but here I've highlighted the three ends. Topologically, it's just a disc with two holes in it, but I'm sure there is something about the curvature which makes the geometry on that surface special and / or cool.
– Arthur
Dec 11 '18 at 14:13












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Math people, like many other people, tend to use heavy slang, about as cryptic as criminal argot at its worst. Luckily for us, they usually leave behind a trail of definitions which theoretically can be followed.



This surface has nothing to do with a sphere, except that it is a minimal surface (which a sphere is not), and hence can be made of soap film, much like a soap bubble, which is a sphere. Unlike a bubble, though, it has got to have borders. Imagine a weirdly bent soap film stretched on a few pieces of wire. (These, BTW, are the ends of the surface; for more formal definition look here).



So it goes.






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    Math people, like many other people, tend to use heavy slang, about as cryptic as criminal argot at its worst. Luckily for us, they usually leave behind a trail of definitions which theoretically can be followed.



    This surface has nothing to do with a sphere, except that it is a minimal surface (which a sphere is not), and hence can be made of soap film, much like a soap bubble, which is a sphere. Unlike a bubble, though, it has got to have borders. Imagine a weirdly bent soap film stretched on a few pieces of wire. (These, BTW, are the ends of the surface; for more formal definition look here).



    So it goes.






    share|cite|improve this answer


























      0














      Math people, like many other people, tend to use heavy slang, about as cryptic as criminal argot at its worst. Luckily for us, they usually leave behind a trail of definitions which theoretically can be followed.



      This surface has nothing to do with a sphere, except that it is a minimal surface (which a sphere is not), and hence can be made of soap film, much like a soap bubble, which is a sphere. Unlike a bubble, though, it has got to have borders. Imagine a weirdly bent soap film stretched on a few pieces of wire. (These, BTW, are the ends of the surface; for more formal definition look here).



      So it goes.






      share|cite|improve this answer
























        0












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        0






        Math people, like many other people, tend to use heavy slang, about as cryptic as criminal argot at its worst. Luckily for us, they usually leave behind a trail of definitions which theoretically can be followed.



        This surface has nothing to do with a sphere, except that it is a minimal surface (which a sphere is not), and hence can be made of soap film, much like a soap bubble, which is a sphere. Unlike a bubble, though, it has got to have borders. Imagine a weirdly bent soap film stretched on a few pieces of wire. (These, BTW, are the ends of the surface; for more formal definition look here).



        So it goes.






        share|cite|improve this answer












        Math people, like many other people, tend to use heavy slang, about as cryptic as criminal argot at its worst. Luckily for us, they usually leave behind a trail of definitions which theoretically can be followed.



        This surface has nothing to do with a sphere, except that it is a minimal surface (which a sphere is not), and hence can be made of soap film, much like a soap bubble, which is a sphere. Unlike a bubble, though, it has got to have borders. Imagine a weirdly bent soap film stretched on a few pieces of wire. (These, BTW, are the ends of the surface; for more formal definition look here).



        So it goes.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Dec 11 '18 at 16:21









        Ivan Neretin

        8,82921535




        8,82921535






























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