Array ( [0] => Array ( [title] => L33A [link] => https://www.youtube.com/embed/LpG8DcdVZNE ) [1] => Array ( [title] => L33B [link] => https://www.youtube.com/embed/CyrZA7jAXK4 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - Lecture 33 | Stationary symmetry breaking bifurcation; Example: Semilinear elliptic equations