This a page from mathematician <a href="https://en.wikipedia.org/wiki/Srinavasa_Ramanujan" class="extiw" title="en:Srinavasa Ramanujan">Srinavasa Ramanujan</a>'s notebooks written down by him between 1903-1910 to show his benefactors to convince them about his abilities as a mathematician.
<a href="https://en.wikipedia.org/wiki/Srinavasa_Ramanujan" class="extiw" title="en:Srinavasa Ramanujan">Srinavasa Ramanujan</a> <br>
1903-1910<br>
<a rel="nofollow" class="external free" href="http://www.imsc.res.in/~rao/ramanujan/">http://www.imsc.res.in/~rao/ramanujan/</a>