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Let $X$ be a compact complex manifold (say of dimension $2$) and $L \rightarrow X $ a holomorphic line bundle. Consider the following statements:

Statement $A_0$: Given any point $p\in X$, there exists a homolorphic section $f_{00} \in H^0(X,L)$, such that $f_{00}(p) \neq 0$.

Statement $A_1$: Given any point $p\in X$, there exists two homolorphic sections $f_{10}, ~~f_{01} \in H^0(X,L)$, such that $$ f_{10}(p), ~~~f_{10}(p) =0 $$ and $\nabla f_{10}\big{|}_p$ and $\nabla f_{01}\big{|}_p$ are linearly independent in $TX_p^* \otimes L_p$.

$\textbf{Question:}$ Give a sufficient criteria on the line bundle $L \rightarrow X $ to guarantee that statement $A_0$ and $A_1$ are true. For example, does being "sufficiently ample" guarantee this?

$\textbf{Edit:} $ Statement $A_1$ was incorrectly stated before. I have also removed the remaining statements, since they were not what I wanted.

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  • $\begingroup$ It looks like you want a very ample bundle, though I do not quite understand the meaning of $A_2$ and, hence, the further extension. $\endgroup$ Commented Nov 19, 2014 at 8:26
  • $\begingroup$ @Alex: You are right, $A_2$ was incorrectly stated. I believe my statement is now correct. Said in words, I am saying that given a point $p$, there should exist a section $f$ that has a genuine $A_1$-node at $p$ (the singularity looks like x^2+y^2 =0 in local coordinates). $\endgroup$
    – Ritwik
    Commented Nov 19, 2014 at 8:33
  • $\begingroup$ @Alex: Why does "very ample" guarantee statements $A_0$ and $A_1$? $\endgroup$
    – Ritwik
    Commented Nov 19, 2014 at 8:34
  • $\begingroup$ By the definition of very ample? $\endgroup$ Commented Nov 19, 2014 at 8:37
  • $\begingroup$ I think $A_1$ could be restated as well, but, essentially, $A_0+A_1=\text{very ample}$. $\endgroup$ Commented Nov 19, 2014 at 8:39

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