Raul Miller wrote: > On 4/24/07, John Randall <[EMAIL PROTECTED]> wrote: >> The problem with square roots is that you need >> >> %: _1 + j.(+0) ---> 0j1 >> %: _1 + j.(-0) ---> 0j_1 > ... >> The Borda's mouthpiece example is intended to be convincing that an >> error has occurred: streamlines cannot intersect, so you know >> something is wrong. > > In the Borda's mouthpiece example, this is trivial to deal with, > without signed zeros. Using Fz and z from my previous message > in this thread: > > plot Fz z r=: _1e_12+0.01*1+i.100 >
Raul: I think this merely delays the problem. You get the same issue with streamlines with plot Fz z r=: _1e_12+0.01*1+i.200 I agree that the axis labels are less than informative. The point is that the transformation is (mathematically) conformal but evidently not (computationally) conformal. Best wishes, John ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
