agungtri on Twitter: "RT @gabrielpeyre: Fenchel-Rockafellar duality leverage linear operator in Lagrange duality. https://t.co/YIaDvllcdu https://t.co/33j0E5Altk…" / Twitter
Gabriel Peyré on Twitter: "The polar of a set generalizes duality between polyhedra. It is to sets what Legendre-Fenchel duality is to functions. Gauges and indicators are interleaved by polarity and duality.
![File:Duality numberline .png - Cornell University Computational Optimization Open Textbook - Optimization Wiki File:Duality numberline .png - Cornell University Computational Optimization Open Textbook - Optimization Wiki](https://optimization.cbe.cornell.edu/images/a/af/Duality_numberline_.png)