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  The non-commutativ KdV equations

+ 0 like - 0 dislike

The non-commutativ KdV equations are

$u_t +u_{xxx}-3(u u_x+ u_x u)=0$

They can be written by a pair of Lax :

$L(u)=-\partial^2 +u$

$A(u)=4 \partial^3-6u \partial -3 u_x$

$\frac {\partial L}{\partial t}=[L,A]$

Is it an integrable system? For example, $u=a +bi +cj +dk$ has values in the Hamilton numbers $R [i,j,k]$; it is then equivalent to a set of four coupled real differential equations.

asked Sep 6, 2018 in Mathematics by Antoine Balan (-80 points) [ revision history ]
edited Sep 6, 2018 by Antoine Balan

1 Answer

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Yes, the noncommutative KdV equation in question is integrable, in particular in that it has infinitely many commuting symmetries and infinitely many conserved quantities which are in involution, as shown in the paper A new approach to the quantum KdV by Fuchssteiner and Chowdhury.

answered Sep 6, 2018 by a-user (40 points) [ revision history ]

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