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math.AG2010
Limits of quotients of real analytic functions in two variables
Carlos A. Cadavid, Juan D. Velez, Sergio Molina
Necessary and sufficient conditions for the existence of limits of the form {equation*} \lim_{(x,y)\rightarrow (a,b)}\frac{f(x,y)}{g(x,y)} {equation*} are given, under the hipothes…
math.AG2008★ 5 cited
Normal Factorization in and the Confluence of Singular Fibers in Elliptic Fibrations
Juan D. Velez, Carlos A. Cadavid
In this article we obtain a result about the uniqueness of factorization in terms of conjugates of the matrix $U=(\xymatrix{1 & 1 0 & 1})$, of some matrices representing the conjug…