The greater/less-than symbols (> and <) were introduced by the British mathematician Thomas Harriot in 1631. It then took 103 years for the French scientist Pierre Bouguer to introduce the greater/less-than or equal to symbols (≥ and ≤) for the first time. pic.twitter.com/ppzqaEP0dM

— Fermat's Library (@fermatslibrary) October 9, 2019

Dissection of square to regular hexagon#mtbos #iteachmath #math #maths pic.twitter.com/wGWSGlu8Yd

— Idan Tal (@MagicPi2) October 2, 2019

41 triple pendulums with 𝑠𝑙𝑖𝑔𝘩𝑡𝑙𝑦 different initial conditions

(source:https://t.co/Cdt3o6N4Nf) pic.twitter.com/F7yd4f0tuL

— 〈 Berger | Dillon 〉 (@InertialObservr) September 29, 2019

🤯Know your big numbers – the American way counts in thousands aka 'short form' while the British way counts in millions aka 'long form'. Twitter uses 64-bit user IDs meaning it could create 18.5 quintillion/trillion unique accounts or 18,446,744,073,709,551,615 to be precise. pic.twitter.com/lyMaumqVoQ

— Simon Pampena (@mathemaniac) September 27, 2019