See also: 2018 https://news.ycombinator.com/item?id=18250034 2017 https://news.y...

		dang on May 21, 2020 \| parent \| context \| favorite \| on: Calculus Made Easy (1914) [pdf] See also: 2018 https://news.ycombinator.com/item?id=18250034 2017 https://news.ycombinator.com/item?id=14161876