A great gift for a male friend in university who studies mathematics is a book on the subject. A book about mathematics can help him understand the subject better and increase his knowledge. It can also serve as a reference when he needs to look up a specific topic. Additionally, a book can provide a sense of accomplishment when he completes it and can be a source of motivation and inspiration.

A calculator can also be a great gift for a male friend in university who studies mathematics. A calculator can help him with his calculations, which can save him time and effort. It can also help him to visualize the data and equations he is working on. A calculator can also be a great tool for problem solving and can be used for a variety of mathematical tasks.

Another great gift for a male friend in university who studies mathematics is a subscription to a mathematics magazine or journal. This can help him stay up to date on the latest developments in the field of mathematics and can provide him with interesting articles and stories. It can also provide him with a way to stay connected with the world of mathematics and the people who are passionate about it.

Finally, a gift card to a bookstore or online store can be a great gift for a male friend in university who studies mathematics. This can give him the opportunity to purchase books or other resources that he may need to further his studies. It can also give him the opportunity to explore different topics and ideas related to mathematics.