The Invar Tensor Package. The Invar package is introduced, a fast manipulator of generic scalar polynomial expressions formed from the Riemann tensor of a four-dimensional metric-compatible connection. The package can maximally simplify any polynomial containing tensor products of up to seven Riemann tensors within seconds. It has been implemented both in Mathematica and Maple algebraic systems (Source:

References in zbMATH (referenced in 15 articles , 1 standard article )

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  1. Saffer, Alexander; Yunes, Nicolás; Yagi, Kent: The gravitational wave stress-energy (pseudo)-tensor in modified gravity (2018)
  2. Endlich, Solomon; Gorbenko, Victor; Huang, Junwu; Senatore, Leonardo: An effective formalism for testing extensions to general relativity with gravitational waves (2017)
  3. McNees, Robert; Stein, Leo C.; Yunes, Nicolás: Extremal black holes in dynamical Chern-Simons gravity (2016)
  4. Christiansen, N.; Litim, D.F.; Pawlowski, J.M.; Rodigast, A.: Fixed points and infrared completion of quantum gravity (2014)
  5. Lozanovski, C.: An example of non-Weyl preserving complex transformation (2014)
  6. Nutma, Teake: \itxTras: a field-theory inspired \itxAct package for Mathematica (2014)
  7. Squire, J.; Burby, J.; Qin, H.: VEST: Abstract vector calculus simplification in Mathematica (2014)
  8. Gómez-Lobo, Alfonso García-Parrado; Martín-García, José M.: \itSpinors: a Mathematica package for doing spinor calculus in general relativity (2012)
  9. Virmani, Amitabh: Supertranslations and holographic stress tensor (2012)
  10. Melnikov, N.B.; Reser, B.I.; Grebennikov, V.I.: Spin-fluctuation theory beyond Gaussian approximation (2010)
  11. Martín-García, J.M.; Yllanes, D.; Portugal, R.: The Invar tensor package: differential invariants of Riemann (2008)
  12. Martin-Garcia, Jose M.; Yllanes, David; Portugal, Renato: The invar tensor package: Differential invariants of Riemann (2008) ioport
  13. Martín-García, J.M.; Portugal, R.; Manssur, L.R.U.: The Invar tensor package (2007)
  14. Martin-Garcia, Jose M.; Portugal, Renato; Manssur, Leon R.U.: The invar tensor package (2007) ioport
  15. Gatermann, Karin: Semi-invariants, equivariants and algorithms (1996)