Okay. Weird. It works with JS on the client, so I unless your browser has a very different JS engine (with bugs, maybe?) I'm not sure how this could happen. (Refreshing caches is always a good idea.)
About my comment about the "real interpreters" - ancient stuff, I do not have papers right now, but if somebody is profficient in that topic any comment into that would help. Maybe there is no longer distinction (and I am unaware of that).
@Raphael is there any chance that while looking for Arden lemma I have found your pdf?
@Evil Afraid not. I prepared the Arden one for students back then. Nowadays, I would probably refer people to the reference question on Computer Science. ;)
(I seem to remember that my former colleague prepared another document on one of these algorithms, but I don't know which. I don't think it's online.)
Especially good one, because my teacher got this quirk that his book and script was full of errors, which he was aware of, but allowed people to bring book to the exam. And all poor students rewriting parts of book failed...
Of course not. He spotted them, students gave him list of errors and yet it was fully premeditated - he was enforcing people to attend lectures this way ;)
Well, if it's common knowledge that the book contained errors, those who started copying stuff without checking it rigorously during their preparation failed correctly.
Well on one side it is bad to provide script with errors, on the other he was indeed correcting them during the lecture and told about the errors on the first lecture, so those who failed to show up more than twice to figure it out... That is on them.
In overall, it was even nice, there were extra points available for spotting mistakes in advance (from topics not yet presented). But since my book is covered with my handwriting... I was looking for bibles ;)