update ch12

Author: caltechdigitaltwin

_pages/book.md

@@ -82,7 +82,7 @@ The slides below that are dated on or after Dec 13, 2024 match the chapters in t
     - Ch 9 Optimal power flow: <a target = "_blank" download href='../assets/book/slides-202410/Low-PSAslides-Ch9-OPF-v20241213.key'><b>Keynote</b></a>  <a target = "_blank" href='../assets/book/slides-202410/Low-PSAslides-Ch9-OPF-v20241213.pdf'><b>PDF</b></a> (last update: Dec 13, 2024) 
     - Ch 10 Semidefinite relaxations: BIM: <a target = "_blank" download href='../assets/book/slides-202410/Low-PSAslides-Ch10-BIMrelaxation-v20241213.key'><b>Keynote</b></a>  <a target = "_blank" href='../assets/book/slides-202410/Low-PSAslides-Ch10-BIMrelaxation-v20241213.pdf'><b>PDF</b></a> (last update: Dec 13, 2024) 
     - Ch 11 Semidefinite relaxations: BFM: <a target = "_blank" download href='../assets/book/slides-202410/Low-PSAslides-Ch11-BFMrelaxation-v20241213.key'><b>Keynote</b></a>  <a target = "_blank" href='../assets/book/slides-202410/Low-PSAslides-Ch11-BFMrelaxation-v20241213.pdf'><b>PDF</b></a> (last update: Dec 13, 2024) 
-    - Ch 12 Nonsmooth convex optimization: <a target = "_blank" download href='../assets/book/slides-202410/'><b> </b></a>  <a target = "_blank" href='../assets/book/slides-202410/'><b> </b></a> 
+    - Ch 12 Nonsmooth convex optimization: <a target = "_blank" download href='../assets/book/slides-202410/'><b> </b></a>  <a target = "_blank" href='../assets/book/slides-202410/'><b> </b></a> (last update: Feb 7, 2025)
     - Ch 13 Stochastic OPF: <a target = "_blank" download href='../assets/book/slides-202410/'><b> </b></a>  <a target = "_blank" href='../assets/book/slides-202410/'><b> </b></a> 
     - Ch 14 Example applications: <a target = "_blank" download href='../assets/book/slides-202410/'><b> </b></a>  <a target = "_blank" href='../assets/book/slides-202410/'><b> </b></a>