Greg Egan on Nostr: In 1907, Henry Dudeney showed that you could dissect a square into 4 pieces that can ...
In 1907, Henry Dudeney showed that you could dissect a square into 4 pieces that can be rearranged to form an equilateral triangle.
In 2024, Erik D. Demaine, Tonan Kamata and Ryuhei Uehara finally proved that this cannot be done with *less than* 4 pieces!
https://arxiv.org/abs/2412.03865
(H/T nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqyxxu3fkku2jfpuuhesaexzuhh6z5al0rjjs292kcvcryxc35v02q9jsaev (nprofile…saev) )
In 2024, Erik D. Demaine, Tonan Kamata and Ryuhei Uehara finally proved that this cannot be done with *less than* 4 pieces!
https://arxiv.org/abs/2412.03865
(H/T nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqyxxu3fkku2jfpuuhesaexzuhh6z5al0rjjs292kcvcryxc35v02q9jsaev (nprofile…saev) )