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scientific article; zbMATH DE number 5180927
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article; zbMATH DE number 5180927 |
Statements
20 August 2007
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modular group
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imaginary quadratic fields
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real quadratic irrational numbers
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linear fractional transformations
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coset diagrams
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rational projective line
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