Math books be like this. Stared at this a long time before I realized it was just basically saying that the product of a matrix with its inverse is the identity. Lol why
@freemo @mandlebro I would suggest the writer's talent is with numbers and concepts, not clearly with words.
Sadly, as someone who wants to communicate his thoughts, and specially on a teaching text, should do better.
I remember a dreadful Calculus book, by Moise, which I hated, absolutely.
@design_RG @freemo I should comment that this is not book that is meant to be read by anyone other than mathematicians. Its an AMS monograph on a modern theory that started being developed, I think, in the 80's, namely information geometry. It's also, as far as I know, the first text on the topic. This line was just laughably convoluted for what he was trying to say.
@mandlebro @freemo Ah, thank you for the clarification! 😉
@freemo Reading math as basically all I do at this point in my PhD and I still find myself going at a rate of about an hour a page for some work, sometimes due to its genuine density, and sometimes due to the quality of the exposition. It's exhausting. Math, by its very nature, is built out of definitions and theorems, including these necessary pieces in your work is hard enough, communicating the intuition and ideas on top of that is something very few people can do effectively.
@mandlebro It's all about expressing something in a very concise and efficient way. When you're actually using these formulea for something, you end up writing the same thing over and over again with slight tweaks here and there. Writing just a few letters, instead of a sentence, makes a big difference in efficiency.
@mandlebro I've been doing math my whole life. I'm halve decent, invented some stuff, learned some really advanced concepts. But the way math is worded has always been the biggest thing that holds me back. I spend more time trying to figure out what they are saying than actually learning concepts (which is usually easy by comparison.