English: This is a diagram for the Wikiversity:Special relativity and steps towards general relativity course. It uses 2D Euclidean w:polar coordinates to show that the basis one-forms, typically thought of as gradients, can vary in length depending on where they are located on a manifold. An associated background image to show the gradients is available at . See the technical comments below for a way to view these together.
several command line options: xfig -specialtext -latexfonts -startlatexFont default FILENAME.fig, and
exporting to .svg format.
Other versions are produced with the same source code and xfig command line and appropriate export format(s). The background image File:Scalar fields theta quadrant.svg is best produced with the octave source code at File:Scalar fields theta quadrant.svg#octave_source_code and moved/copied to the local working directory. It is assumed to be called Scalar_fields_theta_quadrant.eps.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.