Fix transpose typos in additive functional lecture

[jmbejara]

It looks like there are some typos in the formulas for the decomposition. Matrices don't conform. I've fixed them in this PR. Hope this looks ok. Great lectures, btw!

[jstac]

Thanks @jmbejara ! All feedback & PRs are appreciated.

@shizejin, might you be able to review this or request someone else?

[shizejin]

@jstac Sure I would love to review this. I'll do this today.

[shizejin]

Hi @jmbejara, thank you so much for spotting these typos. It is true that the formulas for H and g matrices are not correct. Specifically, I observed inconsistency of shapes of D, F, H, and g matrices in the lecture, which I think is what causes the problem that you very sharply pointed out.

If we stick to the dimensions of D and F as in equation (2), then the modifications you made is correct. Here I derived H and g matrices with details.

It turns out that there are more corrections to make in addition to what you pointed out:

• change D' to D: line162, line817

• change F' to F: line170, line831

• change A' to A: line766

• change H' to H: line832

It would be great to have your opinions about how to complete this correction! @jstac @jmbejara

[jmbejara]

@shizejin Ok. You're right. I missed those. I've made those additional changes and amended the original commit. I also made one more change to line 1044 (changing A' to A). Thanks!

[jstac]

Thanks guys! Looks good. @mmcky, I see this is failing due to checking out of QE theme. What should we do here?

[mmcky]

@jstac after searching and doing some debug work (i.e. reseting security keys etc) it has dawned on me what the issue is. It will need a bit more work to solve so I will raise an issue. Please go ahead and merge -- if you would like an html preview I can switch off the theme step.

The issue here is when the theme files are fetched from a private repo -- the commit author is @jmbejara and a 404 is returned from GitHub.

[jstac]

Roger that @mmcky and thanks all. This is greatly appreciated.