A Peculiar Acceleration - Understanding an Equation

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The discussion centers on a confusion regarding the transition of the term r_s^2 from the denominator in Equation 10 to the numerator in Equation 11 of a referenced article. It is clarified that this discrepancy arises from a typographical error, where the exponent should be -2 instead of the incorrect value presented. The replacement of G in Equation 10 with a numerical expression involving r_s^4 is also noted as part of the error. Participants agree that correcting the exponent resolves the confusion. Overall, the conversation emphasizes the importance of careful review in mathematical expressions to avoid such misunderstandings.
Arman777
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I was reading an article and I saw this expression,
Screenshot from 2022-02-07 14-53-29.png


I don't understand how the ##r_s^2## in the denominator (in Eq.##10##), becomes the numerator in the Eq.##11## ?

Article is here: https://arxiv.org/abs/0708.1132
 
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You can work out what's happened by comparing terms. ##G## in equation (10) has been replaced by some largely numerical expression times ##r_s^4##.
 

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