Math.
Haruki's Theorem says that given three intersecting circles (which only intersect each other at two points) that the lines connecting the inner intersecting points to the outer satisfy:
s1 ⋅ s3 ⋅ s5 = s2 ⋅ s4 ⋅ s6
where s1, s2, s3, s4, s5, s6 are the measure of segments connecting the inner and outer intersection points. The theorem is named after the Japanese mathematician Hiroshi Haruki, who earned his MSc and PhD from Osaka University and taught there. He was a professor at the University of Waterloo in Canada from 1966 till his retirement in 1986. He died in 1997. Source: https://t.co/ksHRIsk76W
Mathematics.
A mathematician emerges from a cave, hands you the piece of paper below, and asks: "What is the 'range' for this beautiful function, f(x) = x⋅sin(1/x)?" What is your response?
Math, AI, Engineering. Technology.
→ Self-solving Rubik Cube Robot.
Credit: Takashi Kaburagi/Human Controller, https://t.co/S8TtGiogas. I didn’t upload this video to 𝕏. I’m pointing to a video residing in the 𝕏 stream of “hardmaru” (Oct 18, 2020)
Technology, mathematics, computer vision.
→ The joy of counting potatoes with AI.
Credit: https://t.co/mWn8JzH73y. I didn’t upload this video to 𝕏. I’m pointing to a video residing in the 𝕏 stream of “Ilir Aliu”, 𝕏 ID “IlirAliu_” (Jan 31, 2026)