% WhiteHoleT5 / WhiteHoleMachines (math form) \[ \begin{aligned} &\textbf{Given:}\quad x \in \mathbb{N}^{L}\ \text{(token ids)},\quad m \in \{0,1\}^{L}\ \text{(attention mask)} \\ &\textbf{Base model (T5-like):}\quad p_{\theta}(y_t \mid y_{