Temperature and other scalars are quantities without direction, have no components, and are zero-order tensors {order, tensor}. Motion, momentum, force, and other vectors have one direction and are first-order tensors. Metric and other matrices can represent two-dimension interactions and are second-order tensors. Vector curvatures can represent four-dimension interactions and are fourth-order tensors.
Mathematical Sciences>Calculus>Vector>Tensor
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Date Modified: 2022.0224