1 < 2 {\displaystyle 1<2} 2 > 1 {\displaystyle 2>1}
Failed to parse (unknown function "\block"): {\displaystyle \block { 5 & 3 = 1}}
\frac 1 3
similarity ( a , b ) = a ⋅ b | a | | b | {\displaystyle \operatorname {similarity} \left(\mathbf {a} ,\mathbf {b} \right)={\frac {\mathbf {a} \cdot \mathbf {b} }{\left|\mathbf {a} \right|\left|\mathbf {b} \right|}}}
a M X x {\displaystyle aMXx} aMmx aMmx I {\displaystyle I} II
I {\displaystyle \operatorname {I} } II