Look up: pica em

1. pica em
   pica noun a linear unit (1/6 inch) used in printing
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
2. Picard theorem
   :For the theorem on existence and uniqueness of solutions of differential equations, see Picard`s existence theorem. In complex analysis, the term `Picard theorem` (named after Charles Émile Picard) refers to either of two distinct yet related theorems, both of which pertain to the range ...
   Found on http://en.wikipedia.org/wiki/Picard_theo
   
   
3. Picard`s theorem
   (from the article `Borel, Émile`) Borel discovered the elementary proof of Picard`s theorem (see Charles-Émile Picard). This sensational accomplishment set the stage for his ... Picard made his name in 1879 when he proved that an entire function (a function that is defined and differentiable for all complex numbers) takes ...
   Found on http://www.britannica.com/eb/a-z/p/64
   
   
4. Picard–Lindelöf theorem
   In mathematics, in the study of differential equations, the `Picard–Lindelöf theorem`, `Picard`s existence theorem` or `Cauchy–Lipschitz theorem` is an important theorem on existence and uniqueness of solutions to first-order equations with given initial conditions. The theorem is n...
   Found on http://en.wikipedia.org/wiki/Picardâ€