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0 votes
0 answers
42 views

How many dimensions are in string theory? [duplicate]

How many dimensions are in string theroy? I heard that there are 11 but to my understanding, there is an infinite, also can strings be on a 2D plane?
Lucas Dewan's user avatar
3 votes
1 answer
8k views

Why are there specifically 10, 11, or 26 dimensions in string theory? [duplicate]

I know that current string theories state that there are 10, 11, or 26 spacetime dimensions in superstring theory, M-theory, and bosonic string theory, respectively. But when I looked up why those ...
DimensionalExpo's user avatar
18 votes
5 answers
27k views

Why does string theory require 9 dimensions of space and one dimension of time?

String theorists say that there are many more dimensions out there, but they are too small to be detected. However, I do not understand why there are ten dimensions and not just any other number? ...
James Kujareevanich's user avatar