Mathematical notation is a language, but actual math isn't. For example, the concept of there being one of something is an inherent feature of our reality, but

Mathematical notation is a language, but actual math isn't. For example, the concept of there being one of something is an inherent feature of our reality, but drawing short vertical lines for them is a thing we do. Similarly, we didn't invent 3.14..., that's just how circles work. We only invented the shapes I just used.