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Anton Petrunin
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On possible counterexample.

LetOn a possible counterexample. Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radusradius of a ball inside of the convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ such that $|x_ny_n|=|y_nz_n|=|z_nx_n|=1$ and $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

If the answer is "yes", then it should lead to a counterexample. The argument in our "About every convex..." might help.

On possible counterexample.

Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radus of ball inside of convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ such that $|x_ny_n|=|y_nz_n|=|z_nx_n|=1$ and $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

On a possible counterexample. Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radius of a ball inside of the convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ such that $|x_ny_n|=|y_nz_n|=|z_nx_n|=1$ and $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

If the answer is "yes", then it should lead to a counterexample. The argument in our "About every convex..." might help.

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Anton Petrunin
  • 45k
  • 14
  • 135
  • 299

On possible counterexample.

Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radus of ball inside of convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ be three points on unit distance such that $|x_ny_n|=|y_nz_n|=|z_nx_n|=1$ and $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

On possible counterexample.

Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radus of ball inside of convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ be three points on unit distance such that $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

On possible counterexample.

Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radus of ball inside of convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ such that $|x_ny_n|=|y_nz_n|=|z_nx_n|=1$ and $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?

Source Link
Anton Petrunin
  • 45k
  • 14
  • 135
  • 299

On possible counterexample.

Let $M$ be a Riemannian manifold and $x,y,z\in M$. One can measure the maximal radus of ball inside of convex hull of $\{x,y,z\}$, let it be $r(M,x,y,z)$.

Is it possible to find a a sequence $M_n$ of negatively curved $n$-dimensional manifolds with points $x_n,y_n,z_n\in M_n$ be three points on unit distance such that $r(M_n,x_n,y_n,z_n)$ stays bounded away from zero as $n\to\infty$?