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nLab > Latest Changes: modular group

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- CommentRowNumber1.
- CommentAuthorUrs
- CommentTime1 day ago
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Author: Urs
Format: MarkdownItexthe term *[[modular group]]* used to redirect to *[[Moebius transformation]]*, which has a subsection of that name, talking about $PSL(2,\mathbb{Z})$. But since also [[SL(2,Z)|$SL(2,\mathbb{Z})$]] is called "the modular group" a better disambiguation is desireable. <a href="https://ncatlab.org/nlab/revision/modular+group/1">v1</a>, <a href="https://ncatlab.org/nlab/show/modular+group">current</a>

the term modular group used to redirect to Moebius transformation, which has a subsection of that name, talking about $<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>PSL</mi><mo stretchy="false">(</mo><mn>2</mn><mo>,</mo><mi>ℤ</mi><mo stretchy="false">)</mo></mrow><annotation encoding="application/x-tex">PSL(2,\mathbb{Z})</annotation></semantics></math>$ .

But since also $<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>SL</mi><mo stretchy="false">(</mo><mn>2</mn><mo>,</mo><mi>ℤ</mi><mo stretchy="false">)</mo></mrow><annotation encoding="application/x-tex">SL(2,\mathbb{Z})</annotation></semantics></math>$ is called “the modular group” a better disambiguation is desireable.

v1, current

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