Linear representation theory of maximal unipotent subgroup of symplectic group of degree four over a finite field

Let $$q$$ be a prime power with underlying prime $$p$$ (we may have $$q = p$$). This page covers the linear representation theory of the maximal unipotent subgroup of the symplectic group of degree four $$Sp(4,q)$$ (in our naming convention, this stands for the group of $$4 \times 4$$ symplectic matrices) over the finite field of size $$q$$. This group can also be described as the $$p$$-Sylow subgroup of $$Sp(4,q)$$.

Related information

 * Linear representation theory of maximal unipotent subgroup of symplectic group of degree six over a finite field
 * Linear representation theory of maximal unipotent subgroup of symplectic group over a finite field