Parameter: λ12 Identified

Algebraic Equations:

σ11λ1212,
σ12σ13σ14σ22λ12122σ14σ23λ12122σ13σ24λ12+2σ122σ23σ2411σ22σ23σ24123σ34λ12-2σ122σ22σ3411σ222σ34,
σ13σ14σ22λ12212σ14σ23λ12212σ13σ24λ122+2σ12σ23σ24λ1222σ23σ24122σ34λ122-2σ12σ22σ34λ12222σ34

Single Door Criterion:

{1} ⊥ {2} | {}

Parameter: λ23 Identified

Algebraic Equations:

σ122λ2312σ1311σ22λ2311σ23,
σ12σ14σ22λ2312σ14σ2312σ13σ2411σ22σ24λ23+2σ11σ23σ24122σ3411σ22σ34,
σ12σ13σ14σ2211σ14σ222λ23122σ14σ2311σ14σ22σ23122σ13σ2411σ12σ22σ24λ23+2σ11σ12σ23σ24123σ3411σ12σ22σ34,
σ14σ222λ232-2σ14σ22σ23λ2314σ23212σ22σ24λ232+2σ12σ23σ24λ2313σ23σ2413σ22σ3412σ23σ34

Single Door Criterion:

{2} ⊥ {3} | {1}

Parameter: λ24 Identified

Algebraic Equations:

σ122λ2412σ1411σ22λ2411σ24,
σ12σ13σ22λ2412σ14σ2311σ22σ23λ2412σ13σ24+2σ11σ23σ24122σ3411σ22σ34,
σ12σ13σ14σ2211σ13σ222λ24122σ14σ2311σ12σ22σ23λ24122σ13σ2411σ13σ22σ24+2σ11σ12σ23σ24123σ3411σ12σ22σ34,
σ13σ222λ24212σ22σ23λ242-2σ13σ22σ24λ24+2σ12σ23σ24λ2414σ23σ2413σ24214σ22σ3412σ24σ34

Single Door Criterion:

{2} ⊥ {4} | {1}

Parameter: ω11 Identified

Algebraic Equations:

1111

Parameter: ω13 Identified

Algebraic Equations:

13σ14σ2212σ14σ2312σ13σ2411σ23σ24122σ3411σ22σ3414σ22ω1312σ24ω13,
σ11σ13σ2211σ12σ23122ω1311σ22ω13

Parameter: ω14 Identified

Algebraic Equations:

13σ14σ2212σ14σ2312σ13σ2411σ23σ24122σ3411σ22σ3413σ22ω1412σ23ω14,
σ11σ14σ2211σ12σ24122ω1411σ22ω14

Parameter: ω22 Identified

Algebraic Equations:

σ12211σ2211ω22,
13σ14σ22212σ14σ22σ2312σ13σ22σ24-2σ122σ23σ2411σ22σ23σ24122σ22σ3411σ222σ3413σ14σ22ω2212σ14σ23ω2212σ13σ24ω22122σ34ω22

Parameter: ω33 Identified

Algebraic Equations:

σ14σ23213σ23σ2414σ22σ3312σ24σ3313σ22σ3412σ23σ3414σ22ω3312σ24ω33,
σ122σ13σ14σ23122σ132σ24123σ14σ33+2σ11σ122σ24σ33112σ22σ24σ33123σ13σ34-2σ11σ122σ23σ34112σ22σ23σ34123σ14ω33-2σ11σ122σ24ω33112σ22σ24ω33,
122σ132σ22+2σ123σ13σ23-2σ11σ122σ232112σ22σ232124σ33+2σ11σ122σ22σ33112σ222σ33124ω33-2σ11σ122σ22ω33112σ222ω33

Parameter: ω44 Identified

Algebraic Equations:

14σ23σ2413σ24214σ22σ3412σ24σ3413σ22σ4412σ23σ4413σ22ω4412σ23ω44,
122σ142σ23122σ13σ14σ24123σ14σ34-2σ11σ122σ24σ34112σ22σ24σ34123σ13σ44+2σ11σ122σ23σ44112σ22σ23σ44123σ13ω44-2σ11σ122σ23ω44112σ22σ23ω44,
122σ142σ22+2σ123σ14σ24-2σ11σ122σ242112σ22σ242124σ44+2σ11σ122σ22σ44112σ222σ44124ω44-2σ11σ122σ22ω44112σ222ω44

Total Effect of X1 on X3: λ12λ23 Identified

Each Parameter Identified

Total Effect of X1 on X4: λ12λ24 Identified

Each Parameter Identified

Vanishing Ideal


Constraint Set:

σ122σ13σ14σ22123σ14σ23123σ13σ24+2σ11σ122σ23σ24112σ22σ23σ24124σ34-2σ11σ122σ22σ34112σ222σ34

Non-determinantal constraints:

list non_determinantal = 1;

Trek-separation: