+ "rootDir": "../src"
A filled torus (a doughnut) is a 3-manifold homeomorphic to \(S^1 \times D^2\), where \(D^2\) is the 2-dimensional disk. There exists a deformation retract from the doughnut to a circle, so the fundamental group of the doughnut is \(\pi_1(S^1 \times D^2) \cong \mathbb{Z}\).
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2025年12月，腾讯大模型研发在原有架构上新设AI Infra部（AI基建）、AI Data部（AI数据）、数据计算平台部。。关于这个话题，PDF资料提供了深入分析