Theorem UpperHalfPlane.exists_gl_smul_eq_self_iff_trace_eq_zero

Modification history

2026-05-13 03:36
Mathlib/Analysis/Complex/UpperHalfPlane/FixedPoints.lean
feat(UpperHalfPlane): define PGL action on the upper half-plane (#36330)
Added UpperHalfPlane.exists_gl_smul_eq_self_iff_trace_eq_zeroView on Github →