{"title":"Shyam Sunder Gupta","description":"\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShyam Sunder Gupta\u003c\/strong\u003e is a former senior officer of the Government of India and spearheaded multiple complex projects as Principal Chief Engineer of Indian Railways. He is an Indian Railway Service of Engineers (IRSE) officer of batch 1981. He has more than 35 years of experience in various managerial, administrative and technical positions, such as Principal Chief Engineer, Executive Director and Divisional Railway Manager on Indian Railways. An Indian recreational mathematician who is actively involved in popularising mathematics at the national and international levels. His major discoveries are Equal Product of Reversible Numbers (EPRNs), rare numbers, unique numbers, palindromic pseudoprimes, fifth-order prime polynomial, 17350-digit memorable prime, etc.  \u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003eHis interest in number recreations dates back to 1978, when his first paper, Miracles of Last Digit, was published. Since then, his contributions have been published in Science Reporter, Science Today, Math Education, At Right Angles, The American Mathematical Monthly, The Mathematical Gazette, Mathematical Spectrum, Scientia Magna and several international books like Unsolved Problems in Number Theory (by R. K. Guy), The Universal Book of Mathematics (by David J. Darling), The Penguin Dictionary of Curious and Interesting Numbers (by David Wells), Prime Curios!: The Dictionary of Prime Number Trivia (by Chris K. Caldwell and G. L. Honaker) and Those Fascinating Numbers (by Jean-Marie De Koninck). Author of the book, \u003cem\u003eCreative Puzzles to Ignite Your Mind\u003c\/em\u003e (Springer, 2023), he also co-authored \u003cem\u003eCivil Engineering Through Objective Type Questions \u003c\/em\u003e(CBS, 1985). \u003c\/p\u003e","products":[{"product_id":"exploring-the-beauty-of-fascinating-numbers-shyam-sunder-gupta-ebook","title":"Exploring the Beauty of Fascinating Numbers","description":"\u003cp\u003eChapter 1. Digital Root Wonders.- Chapter 2. Elegance of Squares, Cubes, and Higher Powers.- Chapter 3. Triangular Numbers.- Chapter 4. Smith Numbers.- Chapter 5. Amicable Numbers.- Chapter 6. Perfect, Multiply Perfect, and Sociable Numbers.- Chapter 7. Happy Numbers.- Chapter 8. Fabulous Fibonacci Numbers, Lucas Numbers, and Golden Ratio.- Chapter 9. On Some Marvellous Numbers of Kaprekar.- Chapter 10. Amazing Number 108.- Chapter 11. Repunit Numbers.- Chapter 12. Equal Product of Reversible Numbers (EPRN).- Chapter 13. Unlucky Thirteen.- Chapter 14. Rare Numbers.- Chapter 15. Beauty of Number 153.- Chapter 16. Fascinating Factorials.- Chapter 17. The Number of the Beast 666.- Chapter 18. Ulam Numbers.- Chapter 19. Mystery of π.- Chapter 20. Cab and Vampire Numbers.- Chapter 21. Digital Invariants and Narcissistic Numbers.-Chapter 22. On some special Numbers.-Chapter 23. Number Curiosities.\u003c\/p\u003e","brand":"Shyam Sunder Gupta","offers":[{"title":"Default Title","offer_id":53652520534343,"sku":"9789819724659","price":53.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/5455\/2903\/files\/exploring-the-beauty-of-fascinating-numbers-ebook-cover.webp?v=1775373091"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/5455\/2903\/collections\/shyam-sunder-gupta-autor-kollektion.webp?v=1775373089","url":"https:\/\/www.cinebuch.de\/collections\/shyam-sunder-gupta.oembed","provider":"CineBuch","version":"1.0","type":"link"}