Coin graphs, Polyhedra, and conformal ma
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Horst Sachs
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Article
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1994
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Elsevier Science
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English
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This is a brief report on some interesting theorems and their interconnections. All of these results are known, some of them have only recently been proved. The key result, however, though found already in 1935, was almost forgotten and its original proof remained unnoticed until very recently. The