Sentence 1: For scalar fluctuations , Formula 9 is referred to as the scalar spectral index , with the formula 10 corresponding to scalar invariant fluctuations .
Sentence 2: For scalar spectral fluctuations , Formula 9 is referred to as the scalar index , with the formula 10 corresponding to scalar invariant fluctuations .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?