قام المؤلفون بتحليل جميع الاصطلاحات الموجودة وصنفوها وفقاً للأإشارات الثلاث التاليةS1, S2, S3::formula_13:formula_14:formula_15:formula_16حيث أن هذه التعريفات كتاب مسنر, ثورن, وويلر تصنف نفسها على أنها formula_17, حيث Weinberg (1972) هي formula_18, Peebles (1980) وEfstathiou (1990) هي formula_19 بينما Peacock (1994), Rindler (1977), Atwater (1974), Collins Martin & Squires (1989) هي formula_20.
The authors analyzed all conventions that exist and classified according to the following three signs (S1, S2, S3)::formula_12The third sign above is related to the choice of convention for the Ricci tensor::formula_13With these definitions Misner, Thorne, and Wheeler classify themselves as formula_14, whereas Weinberg (1972) is formula_15, Peebles (1980) and Efstathiou (1990) are formula_16 while Peacock (1994), Rindler (1977), Atwater (1974), Collins Martin & Squires (1989) are formula_17.