Latex Array Diagram Lookups

Square Diagrams

• Single Square

$$\begin{array}{ccc}& \text{P}& \\ X& \stackrel{a}{⟶}& Y\\ \text{b}\downarrow & & \downarrow \text{ c}\\ R& \stackrel{d}{⟶}& Z\end{array}$$

• Arrow & Square

$$\begin{array}{cccc}\text{P}& & \text{Q}& \\ U& X& \stackrel{a}{⟶}& Y\\ \downarrow \text{ c}& \text{b}\downarrow & & \downarrow \text{ c}\\ W& R& \stackrel{d}{⟶}& D\end{array}$$

• 3 by 2 Square

$$\begin{array}{ccccc}& & \text{P}& & \\ A& \stackrel{a}{⟶}& B& \stackrel{b}{⟶}& C\\ \text{c}\downarrow & & \text{d}\downarrow & & \downarrow \text{ e}\\ D& \stackrel{f}{⟶}& E& \stackrel{g}{⟶}& F\end{array}$$

• Single Square with Diagonal

$$\begin{array}{ccc}& \text{P}& \\ X& \stackrel{a}{⟶}& Y\\ \text{b}\downarrow & \stackrel{e}{\searrow }& \downarrow \text{ c}\\ R& \stackrel{d}{⟶}& Z\end{array}$$

Triangle Diagram

• Lower-left
  $\begin{array}{ccc}X& & \\ \text{b}\downarrow & \stackrel{e}{\searrow }& \\ R& \stackrel{d}{⟶}& Z\end{array}$

• Upper-right
  $\begin{array}{ccc}X& \stackrel{a}{⟶}& Y\\ & \stackrel{e}{\searrow }& \downarrow \text{ c}\\ & & Z\end{array}$