Wikipedia:WikiProject Mathematics/PlanetMath Exchange/83-XX Relativity and gravitational theory

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

 * PM: Einstein field equations, id=6757 -- WP guess: Einstein field equations -- Status: A
 * WP article includes everything in the PM article and more. Ben Cairns 16:13, 11 April 2006 (UTC)


 * PM: Ricci tensor, id=6758 -- WP guess: Ricci tensor -- Status: NM
 * No expert on the subject but there seems to be more in this PM article than can be found in the WP article. Ben Cairns 16:13, 11 April 2006 (UTC)