A screenshot of a tweet by Freya Holmér, at Freya Holmer, which reads: "btw these large scary math symbols are just for-loops". Below the text, there are two mathematical expressions explained with corresponding C-like code examples. Summation, the capital sigma, is compared to a for loop that sums each iteration. Product, the capital pi, is compared to a for loop that multiplies each iteration.
https://misskey-taube.s3.eu-central-1.wasabisys.com/files/a5d3d9f8-7d4b-4603-9836-b2336983948a.webp