I was trying to solve the equation iteratively, breaking up the solution to a low frequency base solution and a high frequency correction. As a first approximation, the low frequency base could also be assumed to stay on the sphere and solve the wave maps equation, so the main problem was to work out what the high frequency correction was doing.
Because the high frequency correction also had to keep the solution on the sphere, one could assume as a first approximation that the high frequency correction was tangent to the low frequency base. So, at any given point in space and time, the low frequency base solution was located on some point on the sphere, and the high frequency correction basically lived on the tangent plane to the sphere at that point. But because the base solution evolved (slowly) in space and time, this tangent space kept rotating around the sphere.
It's a reasoned and fact-based OPINION, and we may trust it because of journalistic research, experience, and a track record of reasoned judgment. OPINION journalists work separately from the newsroom.
It's a reasoned and fact-based OPINION, and we may trust it because of journalistic research, experience, and a track record of reasoned judgment. OPINION journalists work separately from the newsroom.
#NewYorkTimes: "As he escalates his threats of political retribution, Mr. Trump is offering voters a choice of a very different, and far less democratic, form of American government."
That Israeli sniper are shooting Palestinan children very precisely in the head and chest is documented by medics in #Gaza many times but still some people claim that this digitally altered or created material which was only produced to incite antisemitic hatred.
#OwenJones not only presents several witness accounts but also a statement by the #NewYorkTimes who was forced to defend itself against accusations of fake news.