\[a \cong b := \text{iso.to}(a) = b\]where \(a : A\), \(b : B\), and \(\text{iso} : A \cong B\).
Automating a job is much harder than making it irrelevant
。关于这个话题，line 下載提供了深入分析
— Git add/reset from vc-dir: S to stage, U to unstage,。谷歌对此有专业解读
and derives a public key from it