Lipschitz image $mathbf{R} to mathbf{R}^2$ has measure zero?












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I know that of a proof of the following fact using Hausdorff measure, but is there a more elementary way to do it?




Suppose $f: mathbf{R} to mathbf{R}^2$ is Lipschitz. Then $mathcal{L}^2(f(mathbf{R})) = 0$.




Above, $mathcal{L}^2$ is Lebesgue outer measure on $mathbf{R}^2$.










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$endgroup$

















    0












    $begingroup$


    I know that of a proof of the following fact using Hausdorff measure, but is there a more elementary way to do it?




    Suppose $f: mathbf{R} to mathbf{R}^2$ is Lipschitz. Then $mathcal{L}^2(f(mathbf{R})) = 0$.




    Above, $mathcal{L}^2$ is Lebesgue outer measure on $mathbf{R}^2$.










    share|cite|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      I know that of a proof of the following fact using Hausdorff measure, but is there a more elementary way to do it?




      Suppose $f: mathbf{R} to mathbf{R}^2$ is Lipschitz. Then $mathcal{L}^2(f(mathbf{R})) = 0$.




      Above, $mathcal{L}^2$ is Lebesgue outer measure on $mathbf{R}^2$.










      share|cite|improve this question









      $endgroup$




      I know that of a proof of the following fact using Hausdorff measure, but is there a more elementary way to do it?




      Suppose $f: mathbf{R} to mathbf{R}^2$ is Lipschitz. Then $mathcal{L}^2(f(mathbf{R})) = 0$.




      Above, $mathcal{L}^2$ is Lebesgue outer measure on $mathbf{R}^2$.







      measure-theory geometric-measure-theory






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Jan 8 at 14:13









      Drew BradyDrew Brady

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      731315






















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