Parameter: λ₁₃ Identified

Algebraic Equations:

σ₁₁λ₁₃-σ₁₃

Single Door Criterion:

{1} ⊥ {2,3,4} | {}
{1} ⊥ {2,3} | {4}
{1} ⊥ {3,4} | {2}
{1} ⊥ {3} | {2,4}

Parameter: λ₂₄ Identified

Algebraic Equations:

σ₂₂λ₂₄-σ₂₄

Single Door Criterion:

{2} ⊥ {1,3,4} | {}
{2} ⊥ {1,4} | {3}
{2} ⊥ {3,4} | {1}
{2} ⊥ {4} | {1,3}

Parameter: ω₁₁ Identified

Algebraic Equations:

-σ₁₁+ω₁₁

Parameter: ω₂₂ Identified

Algebraic Equations:

-σ₂₂+ω₂₂

Parameter: ω₃₃ Identified

Algebraic Equations:

σ₁₃²-σ₁₁σ₃₃+σ₁₁ω₃₃

Parameter: ω₃₄ Identified

Algebraic Equations:

-σ₃₄+ω₃₄

Parameter: ω₄₄ Identified

Algebraic Equations:

σ₂₄²-σ₂₂σ₄₄+σ₂₂ω₄₄

Vanishing Ideal

Constraint Set:

σ₂₃,
σ₁₄,
σ₁₂

All constraints are determinantal

Trek-separation:

{1} ⊥ {2,4} | ({},{})
{2} ⊥ {1,3} | ({},{})
{2,1} ⊥ {2,4} | ({2},{})
{3,1} ⊥ {2,4} | ({3},{})
{4,1} ⊥ {2,4} | ({4},{})
{1,2} ⊥ {1,3} | ({1},{})
{3,2} ⊥ {1,3} | ({3},{})
{4,2} ⊥ {1,3} | ({4},{})
{1,2} ⊥ {2,4} | ({},{2})
{1,2} ⊥ {1,3} | ({},{1})