svg: { x ∈ R : f ( x ) = 0 } {\displaystyle \{x\in \mathbb {R} :f(x)=0\}}
native: {x∈ℝ:f(x)=0}
mathjax { x ∈ R : f ( x ) = 0 } {\displaystyle \{x\in \mathbb {R} :f(x)=0\}}