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rt′r_{t'}

This entry links every published equation using this exact notation. Its meaning may change between equations.

Used in 1 equation

∇θJ(θ)=Eπ ⁣[∑t=0T∇θlog⁡πθ(at∣st)(∑t′≥trt′)].\nabla_\theta J(\theta) = \mathbb{E}_\pi\!\left[\sum_{t=0}^{T} \nabla_\theta \log \pi_\theta(a_t \mid s_t) \left(\sum_{t' \ge t} r_{t'}\right)\right].

The Hardest Unsolved Problems in AI Agent Architecture · Equation 1

This equation states a bound: one expression must stay on the indicated side of the other under the article’s assumptions.

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