> Where I studied CS, algorithmic complexity and Big-O was taught in Graph Theory (Discrete Maths) I may be misunderstanding you?... In my study and practice o

> Where I studied CS, algorithmic complexity and Big-O was taught in Graph Theory (Discrete Maths) I may be misunderstanding you?... In my study and practice of complexity theory, algorithms related to graph theory are an object of analysis of complexity theory, not a conceptual foundation for it.