According to M theory, our universe is 1 1 dimension, but why not 12 dimension or more? How is the dimension of 1 1 determined?

I read a book about it.

The universe is 1 1 dimension, which is solved by solving equations. When solving the dimensional equation of the universe, two solutions can be obtained, and only these two solutions can make the equation meaningful. One of these two solutions is 1 1 dimension, and the other is 26 dimensions. According to the principle of "Nature advocates simplicity", mathematicians and physicists decided to adopt 1 1 dimension as the dimension of our universe.

No actual observation data, pure mathematical calculation.

The middle school entrance examination mathematics synthesis problem geometry.

Steps to write clearly in high school mathematics:

How to teach addition and subtraction within 20 in juvenile convergence mathematics?

How much is the bus route from Nanjing to Tianshengqiao and the discount ticket for Lishui Tianshengqiao?

Kindergarten large class teaching plan

Children's mathematical difficulties

How to understand the form of infiltration education in kindergarten mathematics

Brief introduction of Wei, a math teacher in Fuyang

How about Xiangtan Tiehang Health Vocational High School?

Judging whether the old college entrance examination mathematics big questions (generally 20 questions) are sure. If you don't calculate the value of k, do you deduct points directly from the size of