The linguistic way to say that is to note that mathematics is an "uncountable noun", just like "water". It's plural, just you can't have just "one mathematic".
It's plural just in the way that "history" isn't.
At least we all still put our pants on the same way...
...over our fannies?! :O
Ah you’re taking me for a ride.
> The word mathematics is singular not plural.
It was originally considered plural. That may even by why the transition from “mathematic” to “mathematics” happened in English.