diff --git a/main.tex b/main.tex index 73585b3e352f3ff1b31dc239c6910d54d94db97c..3aa1e40f0c390e36a511c55c35a73a6de86fa87e 100644 --- a/main.tex +++ b/main.tex @@ -68,10 +68,10 @@ $0 \leq \Delta(E), \Delta(G)$ and $\Delta(E) + \Delta(G) \leq \Delta(F)$. We also have a condition relating to the tilt category $\firsttilt\beta$: $0 \leq \chern^\beta_1(E) \leq \chern^\beta_1(F)$. Finally, there's a condition ensuring that the radius of the circular wall is -strictly positive: $\chern^\beta_2(E) > 0$. +strictly positive: $\chern^{\beta_{-}}_2(E) > 0$. For any fixed $\chern_0(E)$, the inequality -$0 \leq \chern^{\beta_{-}}_1(E) \leq \chern^{\beta_{-}}_1(F)$, +$0 \leq \chern^{\beta}_1(E) \leq \chern^{\beta}_1(F)$, allows us to bound $\chern_1(E)$. Then, the other inequalities allow us to bound $\chern_2(E)$. The final part to showing the finiteness of pseudowalls would be bounding $\chern_0(E)$. This has been hinted at in [ref] and done @@ -128,7 +128,7 @@ is best seen with the following graph: var("m") # Initialize symbol for variety parameter \end{sagesilent} -This is where the $\beta_{-}$ criterion comes in. If $\beta_{-} = \frac{*}{n}$ +This is where the rationality of $\beta_{-}$ comes in. If $\beta_{-} = \frac{*}{n}$ for some $*,n \in \ZZ$. Then $\chern^\beta_2(E) \in \frac{1}{\lcm(m,2n^2)}\ZZ$ where $m$ is the integer which guarantees $\chern_2(E) \in \frac{1}{m}\ZZ$ (determined by the variety). @@ -151,11 +151,11 @@ for the rank of $E$: To get tighter bounds on the rank of destabilizers $E$ of some $F$ with some fixed Chern character, we will need to consider each of the values which -$\chern_1^{\beta_{-}}(E)$ can take. +$\chern_1^{\beta}(E)$ can take. Doing this will allow us to eliminate possible values of $\chern_0(E)$ for which -each $\chern_1^{\beta_{-}}(E)$ leads to the failure of at least one of the inequalities. +each $\chern_1^{\beta}(E)$ leads to the failure of at least one of the inequalities. As opposed to only eliminating possible values of $\chern_0(E)$ for which all -corresponding $\chern_1^{\beta_{-}}(E)$ fail one of the inequalities (which is what +corresponding $\chern_1^{\beta}(E)$ fail one of the inequalities (which is what was implicitly happening before). First, let us fix a Chern character for $F$, @@ -174,7 +174,7 @@ u = Chern_Char(*var("r c d", domain="real")) Δ = lambda v: v.Q_tilt() \end{sagesilent} -Recall [ref] that $\chern_1^{\beta_{-}}$ has fixed bounds in terms of +Recall [ref] that $\chern_1^{\beta}$ has fixed bounds in terms of $\chern(F)$, and so we can write: \begin{sagesilent} @@ -193,11 +193,11 @@ c_in_terms_of_q = c_lower_bound + q \begin{equation} \label{eqn-cintermsofm} c=\chern_1(E) = \sage{c_in_terms_of_q} - \qquad 0 \leq q \leq \chern_1^{\beta_{-}}(F) + \qquad 0 \leq q \leq \chern_1^{\beta}(F) \end{equation} Furthermore, $\chern_1 \in \ZZ$ so we only need to consider -$q \in \frac{1}{n} \ZZ \cap [0, \chern_1^{\beta_{-}}(F)]$. +$q \in \frac{1}{n} \ZZ \cap [0, \chern_1^{\beta}(F)]$. For the next subsections, we consider $q$ to be fixed with one of these values, and we shall be varying $\chern_0(E) = r$ to see when certain inequalities fail.