Proposition 20.3.57.B0E6CF965FAB The potentials $v_ j$ are the full ordinary analytic models
\[ v_ j=P_{\Omega _{a,b}}[q^*(U_{2^ j}|_ B)]. \]
They decrease to $\mathcal T_{\Omega _{a,b}}(u;Y)$ in $L^1(Y)$. For every smooth compact modification $\pi :Z\to Y$, their pullbacks converge in $L^1(Z)$, and for every prime divisor $D\subset Z$,
\[ \nu (v_ j\circ \pi ,D)\longrightarrow \tau _{Y,u}(D). \]
Proof.
For $h\in \mathrm{PSH}(B,a\kappa )$, each finite obstacle envelope $P_{\Omega _{a,b}}(q^*h+A,0)$ is invariant under the elliptic action. Its full supremum descends to the base, where (20.3.50) gives the background condition. Surjectivity makes the obstacle inequalities equivalent on $Y$ and $B$. Hence
\[ P_{\Omega _{a,b}}(q^*h+A,0) =q^*P_{a\kappa }(h+A,0). \]
Letting $A\to +\infty $ and taking upper semicontinuous regularizations proves $P_{\Omega _{a,b}}[q^*h]=q^*P_{a\kappa }[h]$. Analytic type follows from proposition 18.4.8.
The base models decrease to $w_ a$ by theorem 20.3.27. Their pullbacks therefore decrease to $q^*w_ a$ and converge in $L^1(Y)$ by genuine decreasing quasi-plurisubharmonic convergence. The extracted-divisor formula (20.3.45) transfers convergence of all base divisorial Lelong numbers to every $D$ over $Y$; horizontal divisors have coefficient zero throughout. Finally, lemma 5.43.19 gives $L^1$ convergence on each compact modification.
$\square$
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