Fastest way to type in math formulas out of the box?

"While looking for a faster way to enter differential equations, I found that you can actually add autocorrect for math so instead of typing \partial_x I can type \px (I chose that because it is a common one).

This means I can enter equation about 10x faster. I can even program in longer equations using this method. This is very exciting. This also makes it work better for note taking, as this could be entered almost as quickly as doing it by hand but neater.

I did this testing inside OneNote 2013. I then opened up Word and it actually had my customizations, but when I tried it it seemed to work a little differently. I might work as well, but I don't need to use it there so I didn't spend any more time on it. This is the fastest possible way of entering equations that I know of, because it is completely customizable and you can gear it to what you commonly use. Once I have a decent library I can actually enter equations faster than I can by hand.

Hopefully this picture comes through with some of the Math AutoCorrect that I defined below:"

I know you want LaTeX, but I just use LyX to type it because I find myself able to keep up with the prof when he's writing formulas using LyX...

I always liked Scientific Workplace - you could click to select all math operators if you wanted, but it had keyboard shortcuts for everything & even in the earliest days, when the main document was far from WYSIWYG, the equation editing always was 'in place' and lightning fast. If you do a lot of technical writing, I recommend it. It has gotten pricey over time.

"checkout mathml (w3c standard) .. maybe in combination with asciimathml, also used by asciidoc.

as a side note: there exists kind of an addon to the developer framework qt: ""qmmlwidget"""