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E0 CITIZEN · FOUNDATIONS / REPRESENTATION LINE
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$\mathcal Q[\mathsf{Carrier}\mid\Sigma:=V_2^{\otimes3};\mathbf{Rep}_{SU(2)};\dim V_2=5\land\dim\Sigma=125;E0;\varnothing]$
$\dim V_2=2(2)+1=5,\qquad \dim(V_2^{\otimes3})=5^3=125.$
Route: Foundations → Representation Theory → Casimir Junction
Evidence: E0 exact
Boundary: Finite-dimensional SU(2) carrier identity.