Also known as Tolman metric
Lorentzian metric describing an isotropic, expanding, nonhomogenous universe
托尔曼度规（英語：Tolman metric）是描述能量-动量张量为流体的场的度规，是时间的函数。数学表示为：
Abstract from DBpedia / Wikipedia · CC BY-SA
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).