# Homework Help: What is a derivation?

1. Sep 14, 2014

### bmb2009

1. The problem statement, all variables and given/known data

This seems like a simple question but I've never asked it and I'm stuck haha
For my general relativity course we are asked to derive the change in a vector under parallel transport. My professor references his lecture notes on his course web page in the statement of the problem...he says "In the notes, derive all the steps in eq. 1.8"

But in the lecture notes the equation 1.8 seems to be the derivation itself. I.e. he has several steps of tensor analysis and arrives at the conclusion and says the final answer, that a vector does not change under parallel transport. This is what I would have considered a derivation.

Do you think he wants to re-write the steps already laid out for us and maybe write some side comments to show we understand what's going on in each step? Or is a derivation something else entirely?

2. Relevant equations

3. The attempt at a solution

2. Sep 14, 2014

### kurros

Are there lots of steps missing in the notes? Maybe he just wants you to fill in all the gaps needed to get to this eq. 1.8. Usually lecture notes only have really brief and sketchy ("hand-waving") derivations of things, so he probably just wants you to do it more thoroughly.

3. Sep 14, 2014

### bmb2009

That's what I thought... but the equalities and substitutions to derive further results are very well laid out and "easy" to follow. (easy meaning comprehensive)

4. Sep 14, 2014

### kurros

Well, then I'm out of ideas :p.