Without division it does not exist With x, 0, and any operations, it is a line of infinite length If you add y, it becomes a square with infinite lengthed sides By mixing variables, this frontier can become a any shape, as far as I can imagine, and still represents a map of the limit nodes where the observer knows, and can represent mathematically, that math cannot define the result. I'm realizing that the juncture, at least for equations with only x, only x and y, and only x, y, and z- with a single instance of zero in each case would have a "point of maximum instances of failure" at the center of the shape (line, square, cube- at zero). This moves from 2 extremes with only x (infinity, negative infinity, along the line), to 4 extremes in the square, to 8 extremes for the cube. It also represents 2 failures for x and 0 inputs- x/0 and 0/x when x=0- whereas the remainder of the failure points only represent 1 failure each (x/0). When you combine x, y, and 0 though, the ce...