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Author

Devendra Tiwari

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Preprint Sep 2026

Farey Symbols for the Picard Group

We introduce Picard Farey symbols for finite-index subgroups of \(G=\PSL_2(\ZZ[i])\), using the Gaussian Farey tessellation of \(\HH^3\) by ideal octahedra. A symbol records finitely many Gaussian-rational octahedral occurrences, their local stabilizers, and ordered cooriented face pairings. We prove that a valid marke...

Devendra Tiwari, H. Verrill · 0 citations

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