TITLE: A digital notebook for Mathematics?
QUESTION [10 upvotes]: When I studied math 15 years ago, I was dreaming of having a math repository with tags to navigate between the different entries.
I imagined it would come eventually to the market, and was hopefull when I saw the TabletPC included handwriting recognition of equation, and a few software like mathjournal came to fruition using it. then I stopped watching.
Are there any practical solution today to gather mathematical notes?
I take pictures of my handwritten notes in Evernote, but there must be some better and more natural ways to collect notes.
Ideally, the solution would be :

handwritten input, but with text/equation recognition for rewriting
synchronized across my devices

REPLY [2 votes]: Yes, there is as I show with my answer here and check the recommended apps here -- particularly, I think the Paper 53 -app in iPad acts like a "digital notebook".
Notes into searchable books


UPad for note-taking, very good sharing and very good tiny-writing

Evernote-or-some-other-thing for search

*ix -commands here to make PDF -books from your notes



Unsolved OCR -problem

The recognition problem is still under heavy creative research, more here and here. In other words, it is not yet solved and most softwares you are going read below lack the advanced OCR -support -- it is possible nowadays to get it working linewise like here -- more with search-terms such as Stefan Knerr (CEO of Vision Objects, they did the prototype), the paper "Recognition-directed recovering of temporal information from handwriting images" and its successor "Combining diverse systems for handwritten text line recognition" (2011).
You can consult more this problem here and perhaps here. I am still working on them.

General threads about Digital Notebook for Mathematics


Kindle as a Tool for Mathematicians?

Tablet for reading textbooks and writing math by hand?

Similar question in Math Overflow here (a lot of confusing outdated material).