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Understanding a comment by Thurston


Understanding the Hopf fibrationThe Birman–Hilden Theorem and the Nielsen–Thurston classificationBig picture question about the Thurston Metric on Teichmüller SpaceProblem in understanding models of hyperbolic geometryPoincaré conjecture for positively curved Thurston geometriesUnderstanding how the Thurston Geometrization conjecture implies the Poincaré conjecture.Are there many hyperbolic structures on $ I times$ Torus?Understanding cobordisms constructed from a Heegaard tripleUnderstanding a Bill Thurston popularization of knot complementsComputing Gaussian curvature of hyperbolic space using Thurston













1












$begingroup$


In page 359 (right after Theorem 2.3) of the following paper



Thurston, William P., Three dimensional manifolds, Kleinian groups and hyperbolic geometry, Bull. Am. Math. Soc., New Ser. 6, 357-379 (1982). ZBL0496.57005.



W. Thurston states (and I quote)




A hyperbolic structure on the interior of a compact manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori, with the single exception of Example 2.1, which has no hyperbolic structure of finite volume.




His example 2.1 is simply the product of the 2-torus by the closed interval, $M = mathbbT^2times I$.



What did Thurston had in mind when he stated that? Why did he left the solid torus $mathbbDtimesmathbbS^1$ out of this, say, classification? I ask that to understand if it was just a blunder or if he actually had a reason to exclude this case (which can be obviously obtained by the quotient $mathbbH^3/tau$, where $tau$ is a parabolic translation in $mathbbH^3$)?










share|cite|improve this question









$endgroup$











  • $begingroup$
    I think he just forgot his example. He also forgot few non-orientable examples.
    $endgroup$
    – Moishe Kohan
    Mar 14 at 0:38










  • $begingroup$
    I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
    $endgroup$
    – LLima
    Mar 14 at 3:35










  • $begingroup$
    I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
    $endgroup$
    – Lee Mosher
    Mar 14 at 15:20
















1












$begingroup$


In page 359 (right after Theorem 2.3) of the following paper



Thurston, William P., Three dimensional manifolds, Kleinian groups and hyperbolic geometry, Bull. Am. Math. Soc., New Ser. 6, 357-379 (1982). ZBL0496.57005.



W. Thurston states (and I quote)




A hyperbolic structure on the interior of a compact manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori, with the single exception of Example 2.1, which has no hyperbolic structure of finite volume.




His example 2.1 is simply the product of the 2-torus by the closed interval, $M = mathbbT^2times I$.



What did Thurston had in mind when he stated that? Why did he left the solid torus $mathbbDtimesmathbbS^1$ out of this, say, classification? I ask that to understand if it was just a blunder or if he actually had a reason to exclude this case (which can be obviously obtained by the quotient $mathbbH^3/tau$, where $tau$ is a parabolic translation in $mathbbH^3$)?










share|cite|improve this question









$endgroup$











  • $begingroup$
    I think he just forgot his example. He also forgot few non-orientable examples.
    $endgroup$
    – Moishe Kohan
    Mar 14 at 0:38










  • $begingroup$
    I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
    $endgroup$
    – LLima
    Mar 14 at 3:35










  • $begingroup$
    I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
    $endgroup$
    – Lee Mosher
    Mar 14 at 15:20














1












1








1





$begingroup$


In page 359 (right after Theorem 2.3) of the following paper



Thurston, William P., Three dimensional manifolds, Kleinian groups and hyperbolic geometry, Bull. Am. Math. Soc., New Ser. 6, 357-379 (1982). ZBL0496.57005.



W. Thurston states (and I quote)




A hyperbolic structure on the interior of a compact manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori, with the single exception of Example 2.1, which has no hyperbolic structure of finite volume.




His example 2.1 is simply the product of the 2-torus by the closed interval, $M = mathbbT^2times I$.



What did Thurston had in mind when he stated that? Why did he left the solid torus $mathbbDtimesmathbbS^1$ out of this, say, classification? I ask that to understand if it was just a blunder or if he actually had a reason to exclude this case (which can be obviously obtained by the quotient $mathbbH^3/tau$, where $tau$ is a parabolic translation in $mathbbH^3$)?










share|cite|improve this question









$endgroup$




In page 359 (right after Theorem 2.3) of the following paper



Thurston, William P., Three dimensional manifolds, Kleinian groups and hyperbolic geometry, Bull. Am. Math. Soc., New Ser. 6, 357-379 (1982). ZBL0496.57005.



W. Thurston states (and I quote)




A hyperbolic structure on the interior of a compact manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori, with the single exception of Example 2.1, which has no hyperbolic structure of finite volume.




His example 2.1 is simply the product of the 2-torus by the closed interval, $M = mathbbT^2times I$.



What did Thurston had in mind when he stated that? Why did he left the solid torus $mathbbDtimesmathbbS^1$ out of this, say, classification? I ask that to understand if it was just a blunder or if he actually had a reason to exclude this case (which can be obviously obtained by the quotient $mathbbH^3/tau$, where $tau$ is a parabolic translation in $mathbbH^3$)?







hyperbolic-geometry geometric-topology low-dimensional-topology






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Mar 13 at 18:30









LLimaLLima

404




404











  • $begingroup$
    I think he just forgot his example. He also forgot few non-orientable examples.
    $endgroup$
    – Moishe Kohan
    Mar 14 at 0:38










  • $begingroup$
    I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
    $endgroup$
    – LLima
    Mar 14 at 3:35










  • $begingroup$
    I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
    $endgroup$
    – Lee Mosher
    Mar 14 at 15:20

















  • $begingroup$
    I think he just forgot his example. He also forgot few non-orientable examples.
    $endgroup$
    – Moishe Kohan
    Mar 14 at 0:38










  • $begingroup$
    I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
    $endgroup$
    – LLima
    Mar 14 at 3:35










  • $begingroup$
    I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
    $endgroup$
    – Lee Mosher
    Mar 14 at 15:20
















$begingroup$
I think he just forgot his example. He also forgot few non-orientable examples.
$endgroup$
– Moishe Kohan
Mar 14 at 0:38




$begingroup$
I think he just forgot his example. He also forgot few non-orientable examples.
$endgroup$
– Moishe Kohan
Mar 14 at 0:38












$begingroup$
I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
$endgroup$
– LLima
Mar 14 at 3:35




$begingroup$
I also think that's the case, specially since this manifold does not show up in the JSJ decomposition of irreducible manifolds with torus boundary, so he really might overlooked it...
$endgroup$
– LLima
Mar 14 at 3:35












$begingroup$
I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
$endgroup$
– Lee Mosher
Mar 14 at 15:20





$begingroup$
I doubt he forgot it or overlooked it, more likely he had some extra adjectives in his head which didn't make it to his fingers as he typed. Adjectives such as: "orientable"; and "with incompressible boundary".
$endgroup$
– Lee Mosher
Mar 14 at 15:20











1 Answer
1






active

oldest

votes


















1












$begingroup$

Just to close this question. Rather than trying to analyze what Thurston was thinking when writing the statement (which is impossible without help of an ouija board) let me write the correction:




A (complete) hyperbolic structure on the interior of a compact (connected and oriented) manifold $M^3$ with incompressible boundary has finite volume if and only if $partial M^3$ consists of tori, with the exception of $T^2times I$. The latter admits no hyperbolic structure of finite volume.




If we drop the assumption of orientability and incompressible boundary then the correct statement is:




A (complete) hyperbolic structure on the interior of a compact (connected) manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori and Klein bottles, with four exceptions which are $T^2times I, K^2times I$, $D^2times S^1$ (the solid torus) and the total space of the unique nontrivial disk bundle over $S^1$ (the solid Klein bottle). The exceptional manifolds admit a hyperbolic structure but admit no hyperbolic structures of finite volume.




Here $K^2$ is the Klein bottle.






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    $begingroup$

    Just to close this question. Rather than trying to analyze what Thurston was thinking when writing the statement (which is impossible without help of an ouija board) let me write the correction:




    A (complete) hyperbolic structure on the interior of a compact (connected and oriented) manifold $M^3$ with incompressible boundary has finite volume if and only if $partial M^3$ consists of tori, with the exception of $T^2times I$. The latter admits no hyperbolic structure of finite volume.




    If we drop the assumption of orientability and incompressible boundary then the correct statement is:




    A (complete) hyperbolic structure on the interior of a compact (connected) manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori and Klein bottles, with four exceptions which are $T^2times I, K^2times I$, $D^2times S^1$ (the solid torus) and the total space of the unique nontrivial disk bundle over $S^1$ (the solid Klein bottle). The exceptional manifolds admit a hyperbolic structure but admit no hyperbolic structures of finite volume.




    Here $K^2$ is the Klein bottle.






    share|cite|improve this answer









    $endgroup$

















      1












      $begingroup$

      Just to close this question. Rather than trying to analyze what Thurston was thinking when writing the statement (which is impossible without help of an ouija board) let me write the correction:




      A (complete) hyperbolic structure on the interior of a compact (connected and oriented) manifold $M^3$ with incompressible boundary has finite volume if and only if $partial M^3$ consists of tori, with the exception of $T^2times I$. The latter admits no hyperbolic structure of finite volume.




      If we drop the assumption of orientability and incompressible boundary then the correct statement is:




      A (complete) hyperbolic structure on the interior of a compact (connected) manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori and Klein bottles, with four exceptions which are $T^2times I, K^2times I$, $D^2times S^1$ (the solid torus) and the total space of the unique nontrivial disk bundle over $S^1$ (the solid Klein bottle). The exceptional manifolds admit a hyperbolic structure but admit no hyperbolic structures of finite volume.




      Here $K^2$ is the Klein bottle.






      share|cite|improve this answer









      $endgroup$















        1












        1








        1





        $begingroup$

        Just to close this question. Rather than trying to analyze what Thurston was thinking when writing the statement (which is impossible without help of an ouija board) let me write the correction:




        A (complete) hyperbolic structure on the interior of a compact (connected and oriented) manifold $M^3$ with incompressible boundary has finite volume if and only if $partial M^3$ consists of tori, with the exception of $T^2times I$. The latter admits no hyperbolic structure of finite volume.




        If we drop the assumption of orientability and incompressible boundary then the correct statement is:




        A (complete) hyperbolic structure on the interior of a compact (connected) manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori and Klein bottles, with four exceptions which are $T^2times I, K^2times I$, $D^2times S^1$ (the solid torus) and the total space of the unique nontrivial disk bundle over $S^1$ (the solid Klein bottle). The exceptional manifolds admit a hyperbolic structure but admit no hyperbolic structures of finite volume.




        Here $K^2$ is the Klein bottle.






        share|cite|improve this answer









        $endgroup$



        Just to close this question. Rather than trying to analyze what Thurston was thinking when writing the statement (which is impossible without help of an ouija board) let me write the correction:




        A (complete) hyperbolic structure on the interior of a compact (connected and oriented) manifold $M^3$ with incompressible boundary has finite volume if and only if $partial M^3$ consists of tori, with the exception of $T^2times I$. The latter admits no hyperbolic structure of finite volume.




        If we drop the assumption of orientability and incompressible boundary then the correct statement is:




        A (complete) hyperbolic structure on the interior of a compact (connected) manifold $M^3$ has finite volume if and only if $partial M^3$ consists of tori and Klein bottles, with four exceptions which are $T^2times I, K^2times I$, $D^2times S^1$ (the solid torus) and the total space of the unique nontrivial disk bundle over $S^1$ (the solid Klein bottle). The exceptional manifolds admit a hyperbolic structure but admit no hyperbolic structures of finite volume.




        Here $K^2$ is the Klein bottle.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Mar 15 at 17:41









        Moishe KohanMoishe Kohan

        48k344110




        48k344110



























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