12.07.2015 Views

v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

588 APPENDIX D. MATRIX CALCULUSalgebraic continuedd(X+ t Y ) = Ydtddt BT (X+ t Y ) −1 A = −B T (X+ t Y ) −1 Y (X+ t Y ) −1 Addt BT (X+ t Y ) −T A = −B T (X+ t Y ) −T Y T (X+ t Y ) −T Addt BT (X+ t Y ) µ A = ..., −1 ≤ µ ≤ 1, X, Y ∈ S M +d 2dt 2 B T (X+ t Y ) −1 A = 2B T (X+ t Y ) −1 Y (X+ t Y ) −1 Y (X+ t Y ) −1 Addt((X+ t Y ) T A(X+ t Y ) ) = Y T AX + X T AY + 2tY T AYd 2dt 2 ((X+ t Y ) T A(X+ t Y ) ) = 2Y T AYd((X+ t Y )A(X+ t Y )) = YAX + XAY + 2tYAYdtd 2dt 2 ((X+ t Y )A(X+ t Y )) = 2YAYD.2.2trace Kronecker∇ vec X tr(AXBX T ) = ∇ vec X vec(X) T (B T ⊗ A) vec X = (B ⊗A T + B T ⊗A) vec X∇ 2 vec X tr(AXBXT ) = ∇ 2 vec X vec(X)T (B T ⊗ A) vec X = B ⊗A T + B T ⊗A

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!