I am math. To wit:
{\bf Theorem} -- {\it
The locus of lines on a generic complete intersection of type
$(d_1,\ldots,d_r)$ in $\Pp^n$ is given by the cycle
In particular, when $\sum d_i=2n-r$, the class that is the result
of the calculation is
$N$ is computable in terms of $r$, $n$ and the $d_i$. This class
represents $N$ lines in $\Pp^n$.
}
or perhaps,
a {\em deformation} (of a scheme $X/k$ over a base $S$)
is a diagram
where the left arrow is flat and the image of $pt=\spec k$ is a closed
point of $S$. The base $S$ will be $\spec A$ for some ring $A$. It
is desirable that deformations of $X$ define a functor $D_X:\Ring \to
\Set$. For interesting cases, there will be more structure than just
that of a set on the image of $D_X$.
or just,
and no, I can't add either.