Based off the abstract, there's one class of weak solutions, the Leray solutions, which are known to exist. And now they've shown for a different class of weak solutions to NS that the solutions are not unique. Is that right?
That's correct, while taking away the entropy inequality as well. The thing is that very inequality is one of these laws of thermodynamics we so love, so I kind of see this as hot air.
Mathematicians Find Wrinkle in Famed Fluid Equations
11–20 of 124 posts
Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#12Earlier quoted context omitted.
That's correct, while taking away the entropy inequality as well. The thing is that very inequality is one of these laws of thermodynamics we so love, so I kind of see this as hot air.
Aye either they have upturned a theory as august as general relativity or they’ve thrown the baby out with the bath water somewhere.
Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#13Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#14Using this approach, Buckmaster and Vicol prove that these very weak solutions to the Navier-Stokes equations are nonunique. They demonstrate, for example, that if you start with a completely calm fluid, like a glass of water sitting still by your bedside, two scenarios are possible. The first scenario is the obvious one: The water starts still and remains still forever. The second is fantastical but mathematically p…
[0] https://warwick.ac.uk/fac/sci/statistics/staff/academic-rese...
Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#15Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#16Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#17Earlier quoted context omitted.
That's correct, while taking away the entropy inequality as well. The thing is that very inequality is one of these laws of thermodynamics we so love, so I kind of see this as hot air.
Aye either they have upturned a theory as august as general relativity or they’ve thrown the baby out with the bath water somewhere.
Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#18Using this approach, Buckmaster and Vicol prove that these very weak solutions to the Navier-Stokes equations are nonunique. They demonstrate, for example, that if you start with a completely calm fluid, like a glass of water sitting still by your bedside, two scenarios are possible. The first scenario is the obvious one: The water starts still and remains still forever. The second is fantastical but mathematically p…
Navier-Stokes has nothing to do with Quantum Mechanics..
Re: Mathematicians Find Wrinkle in Famed Fluid Equations
#19Using this approach, Buckmaster and Vicol prove that these very weak solutions to the Navier-Stokes equations are nonunique. They demonstrate, for example, that if you start with a completely calm fluid, like a glass of water sitting still by your bedside, two scenarios are possible. The first scenario is the obvious one: The water starts still and remains still forever. The second is fantastical but mathematically p…
> Also permissible, and also vanishingly unlikely, under quantum theory. Navier-Stokes has nothing to do with Quantum Mechanics..