GRTensor II is a computer algebra package for performing calculations in the general area of differential geometry. Its purpose is the calculation of tensor components on curved spacetimes specified in terms of a metric or set of basis vectors. The package contains a library of standard definitions of a large number of commonly used curvature tensors, as well as the Newman-Penrose formalism. The standard object libraries are easily expandable by a facility for defining new tensors. Calculations can be carried out in spaces of arbitrary dimension, and in multiple spacetimes simultaneously. Though originally designed for use in the field of general relativity, GRTensorII is useful in many other fields. GRTensor II is not a stand alone package, but requires an algebraic engine. The program was originally developed for MapleV.GRTensorII runs with all versions of Maple, Maple V Release 3 to Maple 11. A limited version (GRTensorM) has been ported to Mathematica. GRTensor II and related software and documentation are distributed free of charge as an aide for both research and teaching.

References in zbMATH (referenced in 25 articles , 1 standard article )

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  1. Babeti, Simona: On Robertson Walker solutions in noncommutative gauge gravity (2014)
  2. Brewin, Leo: A brief introduction to Cadabra: a tool for tensor computations in general relativity (2010)
  3. Birkandan, Tolga: A Newman-Penrose calculator for instanton metrics (2008)
  4. Den Hoogen, R.J.Van: Spherically symmetric solutions in macroscopic gravity (2008)
  5. Edgar, S. Brian; Machado Ramos, M.P.: Type 0 pure radiation metrics with a cosmological constant (2007)
  6. Edgar, S.Brian; Machado Ramos, M.P.: Obtaining a class of type $O$ pure radiation metrics with a negative cosmological constant, using invariant operators (2007)
  7. Sussman, R.A.: Definition and computation of tensors using the package GRTensor (2007)
  8. Husa, Sascha; Hinder, Ian; Lechner, Christiane: Kranc: a Mathematica package to generate numerical codes for tensorial evolution equations (2006)
  9. Puetzfeld, Dirk: PROCRUSTES: A computer algebra package for post-Newtonian calculations in general relativity (2006)
  10. Zet, G.; Manta, V.; Oancea, S.; Radinschi, I.; Ciobanu, B.: A computer aided study of de-Sitter gauge theory of gravitation (2006)
  11. Babeti, Simona: Dilaton-dependent $\alpha'$ corrections in gauge theory of gravitation (2005)
  12. Babeti, Simona; Zet, Gheorghe: An algebraic computing program for studying cosmological models without singularities (2005)
  13. Vulcanov, Dumitru; Vulcanov, Valentina: MAPPLE+GrTensorII Libraries for Cosmology (2004)
  14. Vulcanov, Dumitru N.: Calculation of the Dirac equation in curved spacetimes with possible torsion using MAPLE and REDUCE (2003)
  15. Zet, G.; Manta, V.; Babeti, S.: de Sitter gauge theory of gravitation (2003)
  16. Ishak, Mustapha; Lake, Kayll: An online interactive geometric database including exact solutions of Einstein’s field equations (2002)
  17. Zet, G.; Manta, V.: Self-dual Poincaré gauge theory of gravitation (2002)
  18. Zet, G.; Manta, V.: Self-dual model of $SU(2)$ gauge theory in a space-time with axial symmetry (2001)
  19. Zet, G.; Manta, V.; Bandac, C.: Exact solutions for self-dual SU(2) gauge theory with axial symmetry (2001)
  20. Manta, Vasile; Zet, Gheorghe: A computer aided-study of detecting event horizons and stationary surfaces. (2000)

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