The product group diff(Rn) × diff(R) acts on Ω(Rn,R) in the following way: let φ : Rn → Rn and ψ : R → R be diffeormorphisms and f : Rn → R any smooth function.
Direct current | Sri Lankan Tamil militant groups | direct current | Gross domestic product | direct action | Universal Product Code | Yahoo! Groups | Turbocharged Direct Injection | Pearson product-moment correlation coefficient | High-voltage direct current | Direct marketing | Joint Direct Attack Munition | Direct memory access | Cartesian product | Safeguarding Vulnerable Groups Act 2006 | Product certification | Product (business) | Product bundling | Portsmouth Direct Line | Point groups in three dimensions | National Academy of Direct Taxes | International direct dialing | groups | White-label product | Weimar paramilitary groups | T-groups | Supporters Direct | Saab Direct Ignition | Representation theory of finite groups | Product Red |