Well, I did.. But that didn't matter. Nobody else did... And authority just declared himself as the winner. When they collected money I wrote a note and attached it to the "call for collection"-letter. I think there was some kind of group-psychology thing going on... I talked to a few people, but they just shrugged.

I learned from this that once group psychology kicks in most people aren't even able to look up mathematical definitions in a book to decide something. I wasn't interested in winning alcohol, so I didn't fight more.

Later I successfully corrected another professor, when I saw him making the same mistake... The only difference between the two cases was my tone and voice how I confronted the professors with their mistake. (For the first I was friendly - "Maybe check your terminology" - that didn't help. For the second I was more dominant and just told him that his terminology is wrong - that one worked).

Although I still wonder if the last guy really looked up anything in a book. Maybe with the right kind of authority in my voice I could have sold him any name for the Tensor-Product...