Complex sentence: Note that the figure suggests\\ mathbf P\\ neq\\ mathbf and\\ mathbf NP\\ neq\\ mathbf, if this is not true then the figure should look otherwise.
Split into simpler sentences: Note that the figure suggests\\ mathbf P\\ neq\\ mathbf and\\ mathbf NP\\ neq\\ mathbf. If this is not true then the figure should look otherwise.