There are several magazines and journals that can be beneficial for Mathematics Optional aspirants. These publications provide valuable insights, practice questions, and in-depth analysis of various mathematical concepts. Some recommended magazines and journals for Mathematics Optional aspirants are:

1. Mathematics Today:
Mathematics Today is a monthly magazine that covers various topics in mathematics. It provides articles, practice questions, and solutions for competitive exams like the UPSC. The magazine also includes interviews with renowned mathematicians and tips for effective preparation.

2. The Mathematical Intelligencer:
The Mathematical Intelligencer is a quarterly journal that focuses on mathematics and its applications. It features articles on diverse topics like number theory, geometry, algebra, and mathematical physics. The journal also includes book reviews, puzzles, and historical perspectives on mathematics.

3. Journal of the Indian Mathematical Society:
The Journal of the Indian Mathematical Society is a peer-reviewed journal that publishes research papers in various branches of mathematics. It covers topics like algebra, analysis, geometry, and number theory. Aspirants can benefit from reading research papers to enhance their conceptual understanding and problem-solving skills.

4. The American Mathematical Monthly:
The American Mathematical Monthly is a popular magazine that publishes articles and problems related to mathematics. It covers a wide range of topics and provides insights into the latest developments in the field. The magazine also includes book reviews, historical articles, and interviews with mathematicians.

5. Mathematics Spectrum:
Mathematics Spectrum is a bi-monthly magazine that focuses on mathematics education. It provides articles, problem sets, and solutions for various mathematical concepts. The magazine also includes tips for effective teaching and learning strategies.

6. The College Mathematics Journal:
The College Mathematics Journal is a publication of the Mathematical Association of America. It covers a wide range of topics in mathematics, including calculus, algebra, and geometry. The journal includes articles, problems, and solutions that cater to the needs of undergraduate mathematics students.

7. Resonance:
Resonance is a monthly journal that covers various subjects of science and mathematics. It provides articles, practice questions, and solutions for competitive exams. The journal also includes interviews with successful candidates and tips for effective exam preparation.

Reading these magazines and journals can help Mathematics Optional aspirants stay updated with the latest developments in the field of mathematics, improve their problem-solving skills, and enhance their conceptual understanding. It is recommended to regularly read and practice from these publications to excel in the Mathematics Optional paper of the UPSC exam.