推 zombiea : det A = det A^t 01/27 19:47
推 Vulpix : Sylvester's determinant identity 01/27 19:51
→ Ricestone : ATAx=(λ_1)x then AATAx=A(λ_1)x=(λ_1)(Ax) 01/27 19:55
→ Ricestone : 反之亦同 01/27 19:55
→ Ricestone : 前提非零 01/27 19:55
→ DLHZ : 感謝各位 01/27 20:05