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Transformation of field strengths:

1. Covariance of the 2-form and the 3-form field strengths transformations

• FAB_variation

2. Covariance of the 4-form field strength transformations

• Lie transformation rule for the 4-form field strength Lie_F4
• Check of the variation is performed in two steps Var_F4(1), Var_F4(2)

Bianchi identitites

1. Derivation of the identities in curved indices

• Bianchi 4
• Bianchi 5
• Bianchi 6
• Bianchi 7
• Bianchi 8
• Bianchi 9

2. Explicit check of new Bianchi identities

• Check of BI 4
• Check of BI 6
• Check of BI 7
• Check of BI 8
• Check of BI 9

3. Complementary calculation for the transition from curved to flat indices (Appendix D)

• FMNmunu