Conformal mapping between two half space

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SUMMARY

The discussion centers on the existence of a conformal mapping between a bumped half-space defined by the conditions (y > |b - x|, |x| < b && y > 0, |x| > b) and the flat upper half-space (y > 0). Participants confirm that, according to Riemann's theorem, such a mapping exists. To find an explicit mapping, it is suggested to analyze the region by dividing it into manageable sections, despite the challenge posed by its unbounded nature. The conversation emphasizes the importance of understanding the boundary shapes, which may require a piecewise function approach.

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  • Knowledge of complex analysis
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Mathematicians, particularly those specializing in complex analysis, students studying conformal mappings, and researchers exploring geometric function theory.

radiofeda
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Hi all,

Suppose there is a bump at the origin, is there a conformal mapping between the bumped half-space (y>|b-x|, |x|<b && y>0, |x|>b) and the flat upper half space (y>0)? Anyone has a hint? Thanks in advance.

Regards,
Tony
 
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of course the answer is yes by riemann's theorem. to find an explicit one i suppose you could chop your region up into pieces and work on each piece. you have two quarter planes and a strip with a triangle removed, it looks like.
 
mathwonk said:
of course the answer is yes by riemann's theorem. to find an explicit one i suppose you could chop your region up into pieces and work on each piece. you have two quarter planes and a strip with a triangle removed, it looks like.

Thanks. I don't think I can chop the region up into pieces since that it is unbounded. I do know there is a conformal mapping cause we can imagine the coordinate grid lines in the bumped half space. However, I cannot find it although I know the boundary (line) shape (could be a piecewise function with respect to x or y).
 
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