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Commit d22fec8d authored by Luke Naylor's avatar Luke Naylor
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Reformat result into a theorem

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......@@ -23,6 +23,8 @@
\newcommand{\centralcharge}{\mathcal{Z}}
\newcommand{\minorheading}[1]{{\noindent\normalfont\normalsize\bfseries #1}}
\newtheorem{rmax_with_uniform_eps}{Theorem}[section]
\begin{document}
\title{Explicit Formulae for Bounds on the Ranks of Tilt Destabilizers and
......@@ -829,8 +831,35 @@ radius of the pseudo-wall being positive
\frac{1}{2n^2}\ZZ
\end{equation}
\begin{rmax_with_uniform_eps}[Bound on $r$ \#1]
Let $v = (R,C,D)$ be a fixed Chern character. Then the ranks of the
pseudo-semistabilizers for $v$ are bounded above by the following expression.
\begin{align*}
&\frac{\lcm(m,2n^2)}{2}
\max_{q \in [0,\chern_1^\beta(v)]}
\\
&\left\{
\min
\left(
q^2,
2R\beta q
+C^2
-2DR
-2Cq
+q^2
+\frac{R}{\lcm(m,2n^2)}
\right)
\right\}
\end{align*}
\end{rmax_with_uniform_eps}
\begin{proof}
\noindent
Both $d$ and the lower bound are elements of $\frac{1}{\lcm(m,2n^2)}\ZZ$.
Both $d$ and the lower bound in
(eqn \ref{eqn:positive_rad_condition_in_terms_of_q_beta})
are elements of $\frac{1}{\lcm(m,2n^2)}\ZZ$.
So, if any of the two upper bounds on $d$ come to within
$\frac{1}{\lcm(m,2n^2)}$ of this lower bound, then there are no solutions for
$d$.
......@@ -887,6 +916,9 @@ assert bounds_too_tight_condition1.rhs() == r
assert bounds_too_tight_condition2.rhs() == r
\end{sagesilent}
\noindent
This is equivalent to:
\begin{equation}
r >
\min\left(
......@@ -903,6 +935,13 @@ assert bounds_too_tight_condition2.rhs() == r
\right)
\end{equation}
If this condition holds for all $q$, then there are no solutions for $d$,
and therefore $r$ cannot satisfy this condition for all $q$.
Taking the maximum of all these expressions over $q$, and substituting the value
for $\epsilon$ gives the result.
\end{proof}
%% refinements using specific values of q and beta
\begin{sagesilent}
......
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