I'd love to study a problem: How much information can be stored in a blank paper sheet.
with those considerations: "store in a sheet" means writte letters or numbers or equations, with a pen and a human hand.
"writte" means there should be a good size of letter to be legible by a person without lens.
also try that the information is not redundant or out of context or incoherent.
Which area of math can help me achieve this?