OH in that case B.Computer Science/B.Science or B.Sci (Computer Science) at Monash or B.Sci (Computer Science) at UoM will probably suit you more than Software Engineering. Monash's single B.Comp Sci is far more "industry focused" than UoM's, with a far larger set of "cross disciplinary" IT core units which may bore you, but this can be overcome by doing a double degree with B.Science or just doing a Bachelor of Science with a Computer Science major as well as a another major (such as maths), which will enable you to not do many of the more "IT" subjects. UoM's course is far more flexible than Monash's though, with a tiny set of core units, the rest being up to you.
I'm still early in my degree, and due to me starting in Commerce/BBIS my course structure is all messed up so I haven't actually done any maths units or "real" computer science units which start in second year yet, so I can't shed too much light on that side ^^; My current understanding is that maths in Computer Science is largely discrete mathematics and logic, maths such as graph theory, number theory, as opposed to Calculus which isn't so relevant. There are applications in stuff such as AI, Natural Language processing, Machine Learning etc.
The first units are introductory programming which will teach you mainly just the syntax of a programming language (In Monash's case, Java), but from then on the focus is on algorithms, and basically how to formulate algorithms to get the computer to compute what you want it to. It gets a bit abstract in nature, being pretty removed from just "programming". It's a bit hard to tell if you hate/like programming if you haven't done it before though ^^; but people find out verrrryyy quickly whether or not they hate it.
That was pretty ranty but a Bachelor of Science with units in computer science will probably be more to your liking than a focused Bachelor of Computer Science which is generally filled with many IT units as well.
EDIT: have you read the wikipedia article on Computer Science?
http://en.wikipedia.org/wiki/Computer_science I have the feeling you're more interested in Computational Science
http://en.wikipedia.org/wiki/Computational_science