Three Digits Embedded Prime Patterns for Three Days: 20.10.2021, 21.10.2021 and 22.10.2021

References: I.J. TANEJA, Embedded Palindromic Prime Numbers – I, RGMIA Research Report Collection, 20(2017), Art. 121, pp. 1-86, http://rgmia.org/papers/v20/v20a121.pdf.I.J. TANEJA, Palindromic Prime Embedded Trees, RGMIA Research Report Collection, 20(2017), Art. 124, pp. 1-14, http://rgmia.org/papers/v20/v20a124.pdf.Inder J. Taneja, https://inderjtaneja.com/2018/08/16/embedded-palprimes-with-10-palindromic-days-of-august-18/.

21st Day, 21st Year and 21st Century: Upside-Down Semi-Magic Squares of Order 21 With Digits 2 and 1

Semi-Magic Squares of Order 21 With Digits 2 and 1 Above two magic square are semi-magic squares with locks of orders 3 and 7. The semi-magic sums of semi-magic squares is 35555555552. Instead of semi-magic we can construct magic square also, but in this it will be without blocks. Morever, the above magic squares are … Continue reading 21st Day, 21st Year and 21st Century: Upside-Down Semi-Magic Squares of Order 21 With Digits 2 and 1

21 Mathematical Hightlights for 2021

This short work brings 21 main representations of 2021 in different ways. These representations are of crazy-type, running numbers, single digit, single letter, Triangular, Fibonacci, palindromic-type, prime numbers, embedded, repeated digits, colored patterns, magic squares, etc. For download this work please go to following link: Inder J. Taneja, 21 Mathematical Highlights for 2021, Zenodo, December … Continue reading 21 Mathematical Hightlights for 2021

Extended Colored Patterns With 2021 On a Board of 9×9

This work is continuation of work on 2021 given at the following link: Inder J. Taneja, Colored Patterns With 2021 On a Board of 9×9, https://inderjtaneja.com/2020/12/26/colored-pattern-with-2021-on-a-board-of-9x9/ In this work we consider the same designs and put them as blocks of 9x9 (for designs) and 81x81 for small squares. The designs are symmetric as 90o and 180o … Continue reading Extended Colored Patterns With 2021 On a Board of 9×9

2020 In Numbers – Mathematical Style

Below are some representations of 2020 in terms of numbers and embedded or bordered magic squares. For the full work see the following link: Inder J. Taneja, 2020 In Numbers: Mathematical Style - Revised, Zenodo, December 31,  2019, pp.1-37, http://doi.org/10.5281/zenodo.3596193 The work also appeared in Alex Bellos's column on puzzles in "The Guardian", 30 december, … Continue reading 2020 In Numbers – Mathematical Style

Three Digits Days: September, 19

References: I.J. TANEJA, Selfie Fractions: Addable, Subtractable, Dottable and Potentiable, Zenodo, March 24, 2019, pp. 1-260, http://doi.org/10.5281/zenodo.2604531. I.J. TANEJA, Pandigital Equivalent Selfie Fractions, Zenodo, April 02, 2019, pp. 1-392, http://doi.org/10.5281/zenodo.2622028. I.J. TANEJA, Repeated Digits Selfie Fractions: Two and Three Digits Numerators, Zenodo, Septembr, 12, 2019, pp. 1-1091, http://doi.org/10.5281/zenodo.3406655.  I.J. TANEJA, Different Digits Selfie Fractions: Two … Continue reading Three Digits Days: September, 19