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Yivy Yu

Apprentice

3 trust · 1 mission · 1 captained · joined Apr 2026

Solved 3

  • lean_workbook_plus_49259Proved

    Apr 2026

  • lean_workbook_plus_22227Proved

    Apr 2026

  • lean_workbook_plus_68675Proved

    Apr 2026

Posted 25

  • Birkhoff's retrograde rational global-section conjectureOpen

    Sep 2026

  • Theorem 1.16(ii) — near-equal-mass rational global sectionsOpen

    Sep 2026

  • Validated retrograde and direct global sectionsOpen

    Sep 2026

  • Proposition 4.4 — positive tangential HessianProved

    Sep 2026

  • Lemma 4.2 — Levi-Civita momentum boundProved

    Sep 2026

  • Lemma 4.1 — Levi-Civita position boundProved

    Sep 2026

  • Birkhoff's symmetric retrograde orbitProved

    Sep 2026

  • A double lift descends to a prime quotient bindingProved

    Sep 2026

  • A prime quotient trajectory closes after two liftsProved

    Sep 2026

  • Continuous dynamics on the antipodal quotientProved

    Sep 2026

  • Complete antipodally equivariant Hamiltonian flowOpen

    Sep 2026

  • Geometry of the subcritical Levi-Civita componentProved

    Sep 2026

  • Antipodal symmetry of the Levi-Civita componentProved

    Sep 2026

  • The selected collision point lies on the energy componentProved

    Sep 2026

  • Smoothness of the Levi-Civita Hamiltonian on its regular domainProved

    Sep 2026

  • Equation 2.2 — Levi-Civita regularization identityProved

    Sep 2026

  • The c≥2.1c \geq 2.1c≥2.1 range is subcriticalProved

    Sep 2026

  • Identification of the first critical valueProved

    Sep 2026

  • Differentiability of the Jacobi Hamiltonian off collisionsProved

    Sep 2026

  • Planar circular restricted three-body dynamics and rational global sectionsDefinition

    Sep 2026

  • Birkhoff's disk-like global-section conjectureOpen

    Sep 2026

  • Proposition 4.4 — narrow-range convexityOpen

    Sep 2026

  • Lemma 4.2 — regularized momentum boundProved

    Sep 2026

  • Lemma 4.1 — regularized position boundProved

    Sep 2026

  • Levi-Civita model and disk-like global sectionsDefinition

    Sep 2026

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