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## Main Question or Discussion Point

I'm studying for a Theoretical Physics degree in the UK, and I have to decide this year if I should stick with that or switch over to a Joint Degree in Maths/Physics. So far, in Maths, I've done calculus up to multivariable and vector calculus, linear algebra, intro do real analysis, intro to pure maths (number theory, groups etc). If I stick with Theoretical Physics, the Maths content of the remainder of my degree will be two Mathematical Methods courses, covering PDEs, ODEs, a small amount of Complex Analysis etc; and a Numerical Methods course.

I really don't think this is enough! There's not much flexibility but I

The other option is to do a joint degree, in which case I can add more Maths courses still like Differential Geometry, more differential equations courses, and more advanced Analysis, but I'll have to drop a second advanced QM course, General Relativity and a physics course called Groups and Symmetries.

So my questions are:

Given that I'm interested in going into Theoretical Physics as a Phd, which is the better option (especially if they tell me I can't study all the maths courses outlined in the second paragraph)? E.g. would it be better to do Topology and Differential Geometry in Maths, than to do undergraduate GR which would probably have less advanced Maths than the Differential Geometry course? Basically, should I focus on getting good at advanced Maths now, or at doing more advanced courses from a Physics perspective?

And if I do study the Maths courses in the second paragraph, would it be better to do Abstract Algebra or Intro to Topology and Metric Spaces?

Thanks for any advice!

I really don't think this is enough! There's not much flexibility but I

*may*be able to convince them to let take some courses in the Maths department: a more advanced Analysis course, Intro to Complex Analysis, Dynamical Systems, and either Abstract Algebra or Intro to Topology and Metric Spaces.The other option is to do a joint degree, in which case I can add more Maths courses still like Differential Geometry, more differential equations courses, and more advanced Analysis, but I'll have to drop a second advanced QM course, General Relativity and a physics course called Groups and Symmetries.

So my questions are:

Given that I'm interested in going into Theoretical Physics as a Phd, which is the better option (especially if they tell me I can't study all the maths courses outlined in the second paragraph)? E.g. would it be better to do Topology and Differential Geometry in Maths, than to do undergraduate GR which would probably have less advanced Maths than the Differential Geometry course? Basically, should I focus on getting good at advanced Maths now, or at doing more advanced courses from a Physics perspective?

And if I do study the Maths courses in the second paragraph, would it be better to do Abstract Algebra or Intro to Topology and Metric Spaces?

Thanks for any advice!