Physics and mathematics are sister sciences, and they are closely related, so some physicists often have a hand in mathematics.
Dr Mei Weining is a China scholar who studies solid state physics. 1in March, 979, he relished his discovery in a letter and revealed some "mirror inversion" phenomena in natural numbers.
Next, we use the two-way arrow (←→) to indicate the relationship between the number of inverted images, so there is 12 ←→ 2 1.
The left and right natural numbers become 144 and 44 1 after being squared respectively, and still maintain the inverse mirror relationship.
Namely: 144 ←→ 44 1
13 and 3 1 are mirror inverses of each other, and the numbers obtained by their squares also maintain the mirror inverse relationship.
13 ←→3 1 169 ←→ 96 1
Moreover, the product of 12 and 13 also "infects" this neutral property.
12× 13= 156 ←→ 65 1=3 1×2 1
After doing nothing, Dr. Mei pursued the victory and continued to look for the adjacent square mirror inverse numbers {1 1, 12} and {2 1, 22}.
Natural numbers are full of miracles! Dr. Mei Weining said that this not only opened his eyes, but also gave him a positive "charge". He felt more energetic and devoted himself enthusiastically to the hard research work of solid state physics.