This short work brings factorial-type numerical representations of the Calendar. It is based on a functional equationa of two and three variables representing day, month and year. There are three ways os wring using either 5!, 6! or 8!. It is given for the years ending in 20 and 2020. The other years can be … Continue reading Factorial-Type Numerical Calendar

# Category: Curiosities

# First of Twelve: Six Twenties

# 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

# 10 Sequential Palindromic Days: September, 19 – Magic Squares of Orders 3 and 4

# Same Digits Day: 21.09.2019 – Upside Down Magic Square

# Same Digits Day: 21.09.2019 – Prime Patterns

# Three Digits Days: September, 19 – Magic Squares

Reference: I.J. TANEJA, Palindromic, Patterned Magic Sums, Composite, and Colored Patterns in Magic Squares, Zenodo, February 2, 2019, pp. 1-99, http://doi.org/10.5281/zenodo.2555741

# 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

# Two Digits Days: September, 19

# Three Days With Upside-Down Digits: 0, 1, 6 and 9

References I.J. Taneja, Palindromic, Patterned Magic Sums, Composite, and Colored Patterns in Magic Squares. Zenodo, February 2, 2019, pp. 1-99, http://doi.org/10.5281/zenodo.2555741http://doi.org/10.5281/zenodo.2555741.