Category:Definitions/Connections
This category contains definitions related to Connections.
Related results can be found in Category:Connections.
Let $M$ be a smooth manifold with or without boundary.
Let $\map {\mathfrak X} M$ be the space of smooth vector fields on $M$.
Let $\map {C^\infty} M$ be the space of smooth real functions on $M$.
Let $\nabla : \map {\mathfrak X} M \times \map {\mathfrak X} M \to \map {\mathfrak X} M$ be the map be written $\tuple {X, Y} \mapsto \nabla_X Y$ where $X, Y \in \map {\mathfrak X} M$, and $\times$ denotes the cartesian product.
Suppose $\forall f, f_1, f_2 \in \map {C^\infty} M$ and $\forall a_1, a_2 \in \R$ we have that $\nabla$ satisfies the following:
- $\nabla_{f_1 X_1 + f_2 X_2} Y = f_1 \nabla_{X_1} Y + f_2 \nabla_{X_2} Y$
- $\map {\nabla_X} {a_1 Y_1 + a_2 Y_2} = a_1 \nabla_X Y_1 + a_2 \nabla_X Y_2$
- $\map {\nabla_X} {f Y} = f \nabla_X Y + \paren {X f} Y$
Then $\nabla$ is known as the connection on $M$.
Pages in category "Definitions/Connections"
The following 7 pages are in this category, out of 7 total.