National Mathematics Day and the double life of Jantar Mantar

National Mathematics Day, celebrated annually on December 22nd, marks the birth anniversary of the legendary Indian mathematician Srinivasa Ramanujan. This day, officially declared by Prime Minister Manmohan Singh in 2012 to commemorate Ramanujan's 125th birth anniversary, serves as a crucial reminder of India's profound contributions to the field of mathematics and aims to inspire young minds to delve into the wonders of numbers and scientific inquiry. Ramanujan, born in Erode, Tamil Nadu in 1887, was a self-taught genius whose extraordinary intuitive grasp of mathematics led to groundbreaking contributions in areas such as number theory, infinite series, continued fractions, and modular forms, despite having little formal training in advanced mathematics. His collaboration with British mathematician G.H. Hardy at Cambridge University from 1914 to 1919 produced a body of work that continues to influence mathematical research globally, cementing his place as one of the greatest mathematicians in history. His life story, marked by immense talent, perseverance, and eventual recognition, embodies the spirit of intellectual pursuit against all odds. The article draws a fascinating parallel between Ramanujan's legacy and the Jantar Mantar observatories, particularly highlighting their shared principle of 'show, don't tell'. The Jantar Mantars are a collection of five astronomical observatories built by Maharaja Sawai Jai Singh II of Jaipur between 1724 and 1734. A polymath himself, Jai Singh II was deeply interested in astronomy, mathematics, and architecture. He constructed these observatories in Delhi, Jaipur, Ujjain, Varanasi, and Mathura with the primary aim of compiling accurate astronomical tables, predicting the times and movements of the sun, moon, and planets, and determining local time. These massive, precisely calibrated stone instruments, such as the Samrat Yantra (a giant sundial), Jai Prakash Yantra, and Misra Yantra, allowed for observable and verifiable measurements of celestial phenomena, making complex astronomical calculations accessible and demonstrable. The Jaipur Jantar Mantar, in particular, is a UNESCO World Heritage Site since 2010, celebrated for its unique architectural and scientific significance. Key stakeholders in promoting and preserving this dual heritage include the Government of India, particularly the Ministry of Science & Technology (through agencies like the Department of Science & Technology) and the Ministry of Culture (through the Archaeological Survey of India). Educational institutions, from primary schools to universities, play a vital role in integrating Ramanujan's story and the principles behind Jantar Mantar into their curricula to foster scientific temper. International bodies like UNESCO are crucial for recognizing and protecting sites like the Jaipur Jantar Mantar, enhancing India's global cultural footprint. Mathematicians, historians, and scientists are essential in continuing research, interpreting historical data, and inspiring future generations. This celebration and preservation matter immensely for India. Firstly, they promote 'scientific temper', a fundamental duty enshrined in Article 51A(h) of the Indian Constitution, which mandates every citizen to develop scientific temper, humanism, and the spirit of inquiry and reform. The lives of Ramanujan and the creators of Jantar Mantar exemplify this spirit. Secondly, it highlights India's rich scientific and technological heritage, inspiring youth to pursue careers in STEM (Science, Technology, Engineering, and Mathematics). Thirdly, the Jantar Mantars contribute significantly to cultural tourism, attracting both domestic and international visitors, thereby boosting local economies and fostering a sense of national pride in India's intellectual past. The protection of these monuments falls under Article 49 of the Constitution, which directs the state to protect monuments, places, and objects of artistic or historic interest, declared to be of national importance. Looking ahead, the future implications are significant. Continued emphasis on National Mathematics Day can bolster initiatives like the National Education Policy (NEP) 2020, which stresses foundational numeracy and scientific literacy, and aims to make learning more experiential and inquiry-based, much like the Jantar Mantar instruments. Increased awareness can lead to greater investment in mathematical research and STEM education, potentially fostering more Ramanujans. Furthermore, better preservation and promotion of historical scientific sites like Jantar Mantar can position India as a hub for scientific heritage tourism and research, attracting scholars and enthusiasts worldwide. By celebrating our scientific past and present, India can cultivate a robust culture of innovation and critical thinking, essential for addressing future global challenges and maintaining its intellectual leadership on the world stage.