Peter McBurney kindly send a link to a paper in Science on Japanese mathematics in 17th century. A quote:
Seki worked on determinants simultaneously with Leibniz, another mathematician whose work went unrecognized for decades because he never published it. “There were striking similarities in mathematical thinking” between the two men, says Eberhard Knobloch, a Leibniz scholar at the Berlin University of Technology. If the Eastern and Western mathematical sages had been in contact, Knobloch says, it probably would have advanced mathematics worldwide.
Why there was (and there is) only one way of doing mathematics?