Weyl dimension formula for C2
= Weyl dimension formula for C2
{c}
For the <C2 root system> with its first <simple root> short, the irreducible <highest-weight representation> of <highest weight> $a\omega_1+b\omega_2$, where $a,b\in\mathbb Z_{\geq0}$, has dimension
$$
\frac{(a+1)(b+1)(a+b+2)(a+2b+3)}6.
$$