I've made a fraction-based calculator, for simplifying rational expressions (written in ANSI-C using vi)

I was aiming to merge a scientific calculator with "bc", because I often need to simplify various fractions and whatnot. Quite happy with the result!

Uses shunting yard algorithm to evaluate the expressions, and a naive descent parser (I think?) to tokenise

Aside: OpenBSD's "editline" is very easy to use

Please ask any questions 😀

http://patpatpat.xyz/data/frac

#c #bsd #unix #math

"Terence Tao on how we measure the cosmos | Part 1"

https://www.youtube.com/watch?v=YdOXS_9_P4U

#math

The solution is simple #MATH : #PrimaryFromTheCenter ! 🤔

C’mon, folks, this ain’t rocket 🚀 surgery!

Persian mathematician Muḥammad ibn Mūsā al-Khwārizmī was born ~780. He not only revolutionized algebra, but his contributions in mathematics, astronomy & geography have been central to hundreds of years of scientific advances.

Known as the father of algebra, al-Khwārizmī became one of the most influential thinkers of all time. The terms algebra & algorithm are derived from his name & work. https://www.loc.gov/item/2021666184/ #HistoryRemix #history #science #math

Quick! What's 6✖️8?

This heatmap shows the trickiest multiplications for kids aged 5-8.

Love to see a similar study on adults to see how they compare!

#dataviz #math

This list of the earliest know use of maths terms is an amazing way to loose time finding old (but super interesting) papers to read thru! Stuff you may likely never come across otherwise!

For someone like myself who loves, but is less than proficient at, maths.... this is a treasure trove of older and more approachable technical papers! And if you are a maths wizard, well I'm sure you can appreciate it for the history and maybe add some obscure older papers to your offline archive! ;)

Link: Earliest Known Uses of Some of the Words of Mathematics

#maths #math #mathematics #science #stem #numbers #smartereveryday #history