Free mathematics · from the basics to olympiads
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Leonhard Euler · 1707–1783
Leonhard Euler was one of the most prolific mathematicians in history. Around 1738 he lost almost all sight in his right eye after years of cartography work for the Saint Petersburg Academy, and in 1766 a cataract was found in his left eye. Nearly blind, he kept going: about half of his work was written after that, often dictated from memory.
Read Euler, read Euler, he is the master of us all.
Pierre-Simon Laplace
The site’s name honours that way of seeing mathematics: clearly, even when the eyes fail. Here you will find step-by-step explanations and solved exams, written for people who are learning.
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