The Lie bracket of elements of the Witt algebra is given by:
$[L_m,L_n]=(m-n)L_{m+n}$
Are there any infinite dimensional subalgebras of the Witt algebra that are not isomorphic to the Witt algebra itself?
The Lie bracket of elements of the Witt algebra is given by:
$[L_m,L_n]=(m-n)L_{m+n}$
Are there any infinite dimensional subalgebras of the Witt algebra that are not isomorphic to the Witt algebra itself?