$\mathcal{L}$-invariants, $p$-adic heights and factorization of $p$-adic $L$-functions

We continue with our study of the non-critical exceptional zeros of Katz’ $p$-adic $L$-functions attached to a CM field $K$, following two threads. In the first thread, we redefine our (group-ring-valued) $\mathcal{L}$-invariant associated to each ${\mathbb{Z}}_p$-extension $K_{\mathrm{\Gamma }}$ of $K$ in terms of $p$-adic height pairings and interpolate them as $K_{\mathrm{\Gamma }}$ varies to a universal (multivariate) group-ring-valued $\mathcal{L}$-invariant. In the second thread, we use our results to study the exceptional zeros of the non-genuine Rankin–Selberg $p$-adic $L$-functions attached to the self-products of nearly ordinary CM families, via the factorization statements we establish. The factorization theorems are extensions of the results due to Greenberg and Palvannan.