# Wikipedia:Naming conventions (theorems)

Appearance

historical reference. . Either the page is no longer relevant or consensus on its purpose has become unclear. To revive discussion, seek broader input via a forum such as the village pump |

The convention is that *theorem* appears with lower case, so that it's

Borsuk-Ulam Theorem

. This is for the page title; a redirect can of course be created for the upper case form(s).
This convention can be seen as universally adopted on list of theorems. It may not be universally accepted outside Wikipedia. The discussion on the talk page for this meta-page wasn't exactly conclusive; but as a *de facto* matter it is now (2004) standard on WP.

The same cannot be said for the

Brouwer's fixed-point theorem but the Lefschetz fixed-point theorem

.
Possible grey areas include Fermat's Last Theorem, Zariski's main theorem where in the first case 'last' qualifies the Theorem (it was the last of Fermat's claimed results to be proved); and in the second case, by contrast, 'main' does refer to Zariski's work.