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I have not understood or even studied string theory.

However I was wondering whether the extra dimensions demanded by M-theory (10 spatial dimensions in that case), other string theories or even any other field theories necessarily demand the dimensions higher than four dimensions all are spatial.

Is it the nature (mathematical) of those dimensions that demand such dimensions to be spatial?

Or are remaining dimensions called spatial because we feel that would be easier to deal with/to explain and are more intuitive?

Thank YOu

Sincerely

DPA

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# Are 10 spatial dimensions necessary for M-Theory?

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