It has been known for a long time that the equivariant 2+1 wave map into the 2-sphere blows up if the initial data are chosen appropriately. Here, we present numerical evidence for the stability of the blow-up phenomenon under explicit violations of equivariance. doi:10.1017/S1446181113000400
@article{7161, title = {Blow-up of the non-equivariant 2+1 dimensional wave map}, journal = {ANZIAM Journal}, volume = {55}, year = {2014}, doi = {10.21914/anziamj.v55i0.7161}, language = {EN}, url = {http://dml.mathdoc.fr/item/7161} }
Peter, Ralf. Blow-up of the non-equivariant 2+1 dimensional wave map. ANZIAM Journal, Tome 55 (2014) . doi : 10.21914/anziamj.v55i0.7161. http://gdmltest.u-ga.fr/item/7161/