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Commit f12e230c authored by Luke Naylor's avatar Luke Naylor
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Write up to skeleton for hyperbola graph on twisted Cherns

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......@@ -88,9 +88,10 @@ $\chern^\beta_1(E)$ is the imaginary component of the central charge
$\centralcharge_{\alpha,\beta}(E)$ and any element of $\firsttilt\beta$
satisfies $\chern^\beta_1 \geq 0$. This, along with additivity gives us, for any
destabilizing sequence [ref]:
\[
\begin{equation}
\label{eqn-tilt-cat-cond}
0 \leq \chern^\beta_1(E) \leq \chern^\beta_1(F)
\]
\end{equation}
When finding Chern characters of potential destabilizers $E$ for some fixed
Chern character $\chern(F)$, this bounds $\chern_1(E)$.
......@@ -98,9 +99,15 @@ Chern character $\chern(F)$, this bounds $\chern_1(E)$.
The Bogomolov form applied to the twisted Chern character is the same as the
normal one. So $0 \leq \Delta(E)$ yields:
\[
\chern^\beta_0 \chern^\beta_2 \leq \left(\chern^\beta_1\right)^2
\]
\begin{equation}
\label{eqn-bgmlv-on-E}
\chern^\beta_0(E) \chern^\beta_2(E) \leq \left(\chern^\beta_1(E)\right)^2
\end{equation}
The restrictions on $\chern^\beta_0(E)$ and $\chern^\beta_2(E)$
is best seen with the following graph:
% TODO: hyperbola restriction graph (shaded)
\section{Section 3}
......
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