[see also: but, though, nevertheless, matter
In this section, however, we shall not use it explicitly.
That approach was used earlier in . There, however, it was applied in simply connected regions only.
[Do not use “however'' as a simple substitute for but.]
This implies that however we choose the points yi, the intersection point will be their limit point. [= no matter how we choose]
However small a neighbourhood of x we take, the image will be......
Then Mn(x)=0 for every x, however large.