Talk:Higgs field (classical)

By the well-known theorem ...

The second paragraph ends in the following sentence.

By the well-known theorem, such a reduction takes place if and only if there exists a global section $h$ of the quotient bundle $P/H\to X$. This section is treated as a classical Higgs field.

This is unclear. What "well-known theorem" is this talking about? MWinter4 (talk) 00:06, 11 September 2023 (UTC)