alt Hacker NewsWhy would you need to pay $40 for a PDF of a paper published almost a hundred years ago? What makes the paper not public domain?
Why would you need to pay $40 for a PDF of a paper published almost a hundred years ago? What makes the paper not public domain?
You don't. It is public domain. You pay that if you want to get it from them. This is the same as I can get a free pdf of "Linear algebra done right" from Sheldon Axler's website but if I want to get it from Springer I pay $50 or whatever it is.