Karnaugh maps, the map is one of fact tables by the look of the surface is a sphere, but the writing is writing as a diagram that contains the squares of several channels. There are a number of spaces equal to the 2n channel, n is the number of variables in the function, each square represents one row in a table, the fact that one could be a start or a maxterm minterm, and our considerations. The value that appears in various squares, it is the output of a logic circuit that require input are configured by means of a variable in a different way on the outside of the table.