If someone said to me "I've got Maths on Monday", I would tend to assume they meant the upcoming Monday rather than every Monday. So probably Swann is correct - 'have got' is less common for repeated actions. But note it is 'not usually'. Not the same as 'never' 🙂

Both "I have Maths on Monday" and "I have got Maths on Monday" are grammatically correct and can be used to talk about your school timetable. However, there is a slight difference in usage and preference. "I have Maths on Monday" is the more commonly used form in British English. It simply states the fact that you have a Maths class on Monday without emphasizing the possession. This is the form you will often hear in everyday conversation. "I have got Maths on Monday" is also correct and commonly used in American English. It emphasizes the possession of the class. In this form, "have got" functions as a synonym for "have" and adds emphasis or clarity to the statement. However, it is worth noting that in American English, the use of "have got" is more common in spoken language than in formal writing. In general, both forms are acceptable, but the use of "have" without "got" is more prevalent in British English. If you are unsure, it is safe to use "I have Maths on Monday" as it is widely understood and commonly used.