Local solvability in corank one involutive real-analytic structures Paulo CordaroEvandro da Silva 35A07 In this work we study the problem of local solvability, in degree one, for the differential complex associated to a real-analytic, involutive structure of corank one. We present a new exposition of the original arguments due to F. Treves [15] and, as a consequence, we derive more precise results by allowing less regularity for the given one closed-forms. Indiana University Mathematics Journal 2004 text pdf 10.1512/iumj.2004.53.2636 10.1512/iumj.2004.53.2636 en Indiana Univ. Math. J. 53 (2004) 1607 - 1630 state-of-the-art mathematics http://iumj.org/access/