Emma's tribute to ancient grafitti
https://ift.tt/eA8V8J
... just came to him at that spot, and in his excitement, he took out his penknife and scratched his formula for the Quaternion algebra onto the bridge.'.
from Algebra
... just came to him at that spot, and in his excitement, he took out his penknife and scratched his formula for the Quaternion algebra onto the bridge.'.
from Algebra