Unsupported titles/`rsqb`

Symbol

 * $$(a,b]=\{x\in\R\,|\,a<x\le b\}$$,
 * $$\left]a,b\right] = \{x\in\R\,|\, a<x\le b\}$$
 * $$\left]a,b\right] = \{x\in\R\,|\, a<x\le b\}$$
 * $$\left]a,b\right] = \{x\in\R\,|\, a<x\le b\}$$