Yes, the journals and publications for UPSC Mathematics Optional subject are available in multiple languages.

There are several publishers and platforms that provide study materials, journals, and publications for the Mathematics Optional subject of the UPSC exam. These materials are available in multiple languages to cater to the diverse needs of the aspirants. Let's explore the details below:

1. English:
- English is the primary language in which most of the study materials, journals, and publications are available. It is the most widely used language for UPSC exam preparation.
- Reputed publishers like EduRev, Disha Publications, Arihant Publications, and McGraw Hill Education offer comprehensive study materials in English.
- These study materials include textbooks, reference books, question banks, solved papers, and practice sets, covering the entire syllabus of the Mathematics Optional subject.

2. Hindi:
- Hindi is the second most widely spoken language in India, and there is a significant demand for study materials in Hindi for the UPSC exam.
- Several publishers, including EduRev, offer study materials and publications in Hindi for Mathematics Optional subject.
- These materials are helpful for Hindi medium aspirants who prefer to study in their native language.

3. Regional Languages:
- Apart from English and Hindi, there is also a demand for study materials in various regional languages across India.
- Some publishers provide study materials in regional languages like Tamil, Telugu, Bengali, Marathi, Gujarati, and Kannada, among others.
- These materials cater to the aspirants who are more comfortable studying in their regional language.

4. Online Platforms:
- In addition to traditional print publications, there are several online platforms that offer study materials in multiple languages for the Mathematics Optional subject.
- EduRev, for instance, provides study materials in both English and Hindi, making it accessible to a wider audience.

In conclusion, the journals and publications for the UPSC Mathematics Optional subject are available in multiple languages. Aspirants can find study materials in English, Hindi, and even regional languages, catering to their needs and preferences. It is essential for aspirants to choose reliable and reputable publishers or platforms like EduRev to ensure the quality and accuracy of the study materials.