Parameter: λ14 Identified

Algebraic Equations:

σ13σ22λ1423σ2422σ34

Instrumental Variable:

3 | {2}

Parameter: λ23 Identified

Algebraic Equations:

σ22λ2323

Single Door Criterion:

{2} ⊥ {1,3} | {}
{2} ⊥ {3} | {1}

Parameter: λ24 Identified

Algebraic Equations:

σ22λ2424

Single Door Criterion:

{2} ⊥ {1,4} | {}
{2} ⊥ {4} | {1}

Parameter: ω11 Identified

Algebraic Equations:

1111

Parameter: ω13 Identified

Algebraic Equations:

1313

Parameter: ω14 Identified

Algebraic Equations:

13σ14σ2211σ23σ2411σ22σ3413σ22ω14

Parameter: ω22 Identified

Algebraic Equations:

2222

Parameter: ω33 Identified

Algebraic Equations:

σ23222σ3322ω33

Parameter: ω44 Identified

Algebraic Equations:

-2σ13σ14σ22σ23σ24132σ22σ24211σ232σ242+2σ13σ14σ222σ34+2σ11σ22σ23σ24σ3411σ222σ342132σ222σ44132σ222ω44

Vanishing Ideal


Constraint Set:

σ12

All constraints are determinantal

Trek-separation:

{1} ⊥ {2} | ({},{})