the fundamental group of the immersed image of Klein bottle in $mathbb{R}^3$












2












$begingroup$


how to get the fundamental group of the immersed image of Klein bottle in $mathbb{R}^3$?



I just try to use the Van-Kampen theorem to prove it is $mathbb{Z}$. i am not sure.



if u know something about it, thanks for helping me .










share|cite|improve this question









$endgroup$

















    2












    $begingroup$


    how to get the fundamental group of the immersed image of Klein bottle in $mathbb{R}^3$?



    I just try to use the Van-Kampen theorem to prove it is $mathbb{Z}$. i am not sure.



    if u know something about it, thanks for helping me .










    share|cite|improve this question









    $endgroup$















      2












      2








      2


      2



      $begingroup$


      how to get the fundamental group of the immersed image of Klein bottle in $mathbb{R}^3$?



      I just try to use the Van-Kampen theorem to prove it is $mathbb{Z}$. i am not sure.



      if u know something about it, thanks for helping me .










      share|cite|improve this question









      $endgroup$




      how to get the fundamental group of the immersed image of Klein bottle in $mathbb{R}^3$?



      I just try to use the Van-Kampen theorem to prove it is $mathbb{Z}$. i am not sure.



      if u know something about it, thanks for helping me .







      algebraic-topology homotopy-theory






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      share|cite|improve this question











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      share|cite|improve this question










      asked Dec 15 '18 at 5:09









      yufeng luyufeng lu

      353




      353






















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          $begingroup$

          by "collapsing subspace"(see Hatcher chapter 0) the immersed image is homotopy equivalence to the wedge sum of $S^1,S^1,S^2$.
          so the fundamental group is $Z*Z$






          share|cite|improve this answer









          $endgroup$













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            1 Answer
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            $begingroup$

            by "collapsing subspace"(see Hatcher chapter 0) the immersed image is homotopy equivalence to the wedge sum of $S^1,S^1,S^2$.
            so the fundamental group is $Z*Z$






            share|cite|improve this answer









            $endgroup$


















              0












              $begingroup$

              by "collapsing subspace"(see Hatcher chapter 0) the immersed image is homotopy equivalence to the wedge sum of $S^1,S^1,S^2$.
              so the fundamental group is $Z*Z$






              share|cite|improve this answer









              $endgroup$
















                0












                0








                0





                $begingroup$

                by "collapsing subspace"(see Hatcher chapter 0) the immersed image is homotopy equivalence to the wedge sum of $S^1,S^1,S^2$.
                so the fundamental group is $Z*Z$






                share|cite|improve this answer









                $endgroup$



                by "collapsing subspace"(see Hatcher chapter 0) the immersed image is homotopy equivalence to the wedge sum of $S^1,S^1,S^2$.
                so the fundamental group is $Z*Z$







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Dec 16 '18 at 13:20









                yufeng luyufeng lu

                353




                353






























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