ModularGroup.exists_smul_mem_fd

∀ (z : UpperHalfPlane), ∃ g, g • z ∈ ModularGroup.fd

First Fundamental Domain Lemma: Any z : ℍ can be moved to 𝒟 by an element of SL(2,ℤ)

Defined in: Mathlib.NumberTheory.Modular
Cited by: 2 results in Mathlib
Foundations: Depth 178 from the axioms · uses propext, Classical.choice, Quot.sound

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