How relevant are regularity, uniqueness and such “mathematical” concepts for engineering applications?












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How relevant are regularity, uniqueness and such "mathematical" concepts for engineering applications?



Possibly they're required for computation of the equations, no?










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    Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
    $endgroup$
    – LutzL
    Dec 24 '18 at 20:20










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    Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
    $endgroup$
    – John Wayland Bales
    Dec 24 '18 at 21:02
















0












$begingroup$


How relevant are regularity, uniqueness and such "mathematical" concepts for engineering applications?



Possibly they're required for computation of the equations, no?










share|cite|improve this question









$endgroup$








  • 1




    $begingroup$
    Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
    $endgroup$
    – LutzL
    Dec 24 '18 at 20:20










  • $begingroup$
    Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
    $endgroup$
    – John Wayland Bales
    Dec 24 '18 at 21:02














0












0








0





$begingroup$


How relevant are regularity, uniqueness and such "mathematical" concepts for engineering applications?



Possibly they're required for computation of the equations, no?










share|cite|improve this question









$endgroup$




How relevant are regularity, uniqueness and such "mathematical" concepts for engineering applications?



Possibly they're required for computation of the equations, no?







ordinary-differential-equations






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Dec 24 '18 at 20:06









mavaviljmavavilj

2,80211037




2,80211037








  • 1




    $begingroup$
    Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
    $endgroup$
    – LutzL
    Dec 24 '18 at 20:20










  • $begingroup$
    Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
    $endgroup$
    – John Wayland Bales
    Dec 24 '18 at 21:02














  • 1




    $begingroup$
    Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
    $endgroup$
    – LutzL
    Dec 24 '18 at 20:20










  • $begingroup$
    Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
    $endgroup$
    – John Wayland Bales
    Dec 24 '18 at 21:02








1




1




$begingroup$
Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
$endgroup$
– LutzL
Dec 24 '18 at 20:20




$begingroup$
Usually where the conditions for these theorems, like continuous right sides or a moderate, relatively global Lipschitz constant in the Lipschitz condition, are violated, you get in the numerical solution a stiff DE or something that has solutions stopping in the middle of the domain with no possible continuation.
$endgroup$
– LutzL
Dec 24 '18 at 20:20












$begingroup$
Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
$endgroup$
– John Wayland Bales
Dec 24 '18 at 21:02




$begingroup$
Just as an example, I once had a summer sabbatical with NASA engineers working on automatic docking in Earth orbit. I pointed out that there was no guarantee that a particular equation had a unique solution, and that, in fact it had two solutions. Luckily they were using the correct solution rather than the 'solution' which would have led to a collision.
$endgroup$
– John Wayland Bales
Dec 24 '18 at 21:02










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