KaTeX

EΣZ  CBΣBCΣΣΣVZ  C \begin {array}{lcl} \mathbf {E} & \triangleq & \Sigma \rightarrow \mathbb {Z}\textcolor {blue}{\ \uplus \ \mathbf {C}}\\ \mathbf {B} & \triangleq & \Sigma \rightarrow \mathbb {B} \\ \mathbf {C} & \triangleq & \Sigma \rightarrow \Sigma \\[0.2em] \Sigma & \triangleq & \mathcal {V} \rightarrow \mathbb {Z}\textcolor {blue}{\ \uplus \ \mathbf {C}} \end {array}

MathJax 2.7

x[n]ei2πns/NX[ks].

MathJax 4 CHTML

× F = ( F z y F y z ) 𝐢 + ( F x z F z x ) 𝐣 + ( F y x F x y ) 𝐤 \vec{\nabla} \times \vec{F} = \left( \frac{\partial F_z}{\partial y} - \frac{\partial F_y}{\partial z} \right) \mathbf{i} + \left( \frac{\partial F_x}{\partial z} - \frac{\partial F_z}{\partial x} \right) \mathbf{j} + \left( \frac{\partial F_y}{\partial x} - \frac{\partial F_x}{\partial y} \right) \mathbf{k}

MathJax 4 SVG

cos ( θ + ϕ ) = cos ( θ ) cos ( ϕ ) sin ( θ ) sin ( ϕ ) \cos(\theta+\phi)=\cos(\theta)\cos(\phi)−\sin(\theta)\sin(\phi)