Andreas Borgen Longva

I think removing ambiguity in names is a good idea in any case. Actually, the more I think about it, the more I like `row_count()`. It's more verbose, of course,...

I can't help but feel that if users need to use this, it indicates that the API is lacking in some aspect, so maybe we should look into these potential...

I can see that this might be convenient in that context, @bright-star. That said, I think this is conflating two very similar but different problems: - Indexing into the internal...

This is a very interesting PR! I'll do a thorough review later, but I want to have some high level discussion first. I must admit I hadn't even considered implementing...

@prismatica: I took a closer look now, and yes, I believe you are right! You only described the underdetermined situation, however (where U is rectangular and L is square). We...

Well, let's say that we want to have `L` a square matrix. Then it has to be `m x m`, since `A` is `m x n`. If `m n`. Using...

@prismatica: no worries! Please take as much time as you need. This PR is also very independent of other ongoing work in the library, so there should be no issues...

@prismatica: there are no stupid questions here, so please don't apologize! And if there were, I'd surely be the champion of foolish questions under normal circumstances :-) Sorry, I was...

It may be that there are mistakes in the algorithm I proposed, but I think it works for this particular example at least! Let's go through it step by step....

Yeah, the slightly more verbose syntax if you _just_ want the Q and R matrices is unavoidable, but is a worthwhile trade-off in my opinion. I've been thinking about your...