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Fun Mathematics
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information on stamp
Title : Fun Mathematics
Issue Date : 2024.08.14
Types : 2
Design : Hexagonal tortoise problem, God`s Number
Stamp No. : 3774
Denomination : 430 won
: QTY
: won
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Detail
Mathematics is not just about numbers and calculations; it is a discipline that stimulates critical thinking. While many people consider math challenging, it is frequently used in our daily lives. Engaging in various math-related activities can foster creativity and imagination. Today, mathematics continues to be actively researched, and the quest to find joy in math persists. br br The hexagonal tortoise problem is a magic polygon created by Choi Seok-jeong, a high-ranking official (prime minister of the Joseon Dynasty) and the foremost mathematician during the reign of King Sukjong of Joseon Dynasty. A magic polygon is an arrangement of numbers such that when you add or multiply them in specific directions, you get a magic constant. One example of a magic polygon is the magic square, where the sums of the numbers in each row, column, and diagonal are the same. The hexagonal tortoise problem consists of nine hexagons connected in a turtle shell pattern, with the vertices containing numbers from 1 to 30. The sum of six numbers at each vertex equals 93, called the magic sum. Although it has been revealed that altering the arrangement of numbers can yield magic sums ranging from 77 to 109, the total number of possible arrangements is still unknown. Choi Seok-jeong, who believed that a Confucianist should be knowledgeable in mathematics, studied Chinese magic squares and created the hexagonal magic square based on his mathematical imagination. His book, Koo-Soo-Ryak, introduces various unique types of magic squares, including the hexagonal tortoise problem. He also left behind the statement, Numbers are the path to truth, and understanding the mathematical order of the world helps to comprehend the principles of the world. br br The Rubik`s Cube, with its six faces, each painted a different color, is a puzzle many have tried at least once. The total number of possible configurations of the Rubik`s Cube is 43,252,003,274,489,856,000, but only one configuration solves the puzzle. The mathematical concept that represents the minimum number of moves required to solve the puzzle is known as God`s Number. When the 3x3x3 Rubik`s Cube, invented by Hungarian sculptor and architecture professor Rubik Ernő in 1974, gained worldwide popularity, people became curious about its God`s Number. To answer this question, mathematicians conducted decades of research starting in the 1980s. Finally, in 2010, four mathematicians, including Tomas Rokicki, used extensive computer calculations to prove that God`s Number is 20. br br
information on stamps
Title Fun Mathematics
Date of Issue 20240814
Quantity 510,000
Design Hexagonal tortoise problem, God`s Number
Printing Process & Colors Offset / Four Colors / Silver Hot Foiling
Sheet Composition (5 × 3) (168mm × 175mm)
Paper 13½ × 13¼
Printer Cartor for POSA
Types 2 Denomination 430 won
Stamp No. 3774 Size of Stamp 26.53mm X 45mm
Image Area 23.53mm X 42mm Perforation 13½ × 13¼
Designer Shin Jaeyong, Park Poosung
Order Information
!doctype html ▶General terms br - The cost of all products in Korean money. br - Quantities are limited. If you wish to purchase in large quantity quantity, please check our inventory, as there may be the shortages on products you wish to purchase. br - We always ship the best quality stamps. If the stamp you have received is damaged, send it back immediately to   KPC and we will replace it for free. br ▶How to pay br - We accept credit card payment for your on-line purchase. br - Please use Internet Explorer by computer. Error can be occured when accessing mobile. br - The acceptable credit cards are VISA, MASTER CARD, and JCB. br ▶Postage and Handling br - The shipping is made through EMS and International Registered Mail. br - The shipping charge is $25~35 USD for EMS and $5~7 USD for International Registered Mail. br - It takes 4~5 days for EMS and more than two weeks for International Registered Mail.
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