I spy with my little eye…something algebraic.

Look at this picture. Does any part of it surprise you? Look more closely. Now? Try crossing your eyes. Do you see a boy’s name? I spell “Peter” with two e’s, but “Piotr” and “Pyotr” appear as authors’ names in papers’ headers. Finding “Petr” in a paper shouldn’t have startled me. But how often does [...]