Some maximal normal subgroups of the modular group (Q3743502)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Some maximal normal subgroups of the modular group |
scientific article |
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Some maximal normal subgroups of the modular group (English)
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1987
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normal subgroups of modular group
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\(PSL_ 2\)
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principal congruence subgroup
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Möbius inversion formula
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non-congruence subgroup
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