There are very few math geniuses in the world who truly changed the face of mathematics. And you may not have heard of any of them, but you will have felt their influence. One of the most famous and well-known of these geniuses was Indian mathematician Srinivasa Ramanujan. He was born in British Raj and received no formal training of any kind.
He had no college education and no financial support to help him develop skills. But Ramanujan had a dream that the Hindu goddess Namagiri appeared to him and told him new formulas. From this, he was able to make ground-breaking mathematical discoveries and change the way we view mathematics.