Array ( [0] => Array ( [title] => L8A [link] => https://www.youtube.com/embed/0gB2b8oe6q4 ) [1] => Array ( [title] => L8B [link] => https://www.youtube.com/embed/inihpPPSlvQ ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - Lecture 8 | Stable manifolds and unstable manifolds