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User gpn
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Recent activity by gpn
1
answer
evaluate() returns RuntimeError when using the explicit value of an index
answer edited
Jan 9
in
General questions
epsilon-tensor
evaluate-components
1
answer
remove_zero_components and components_to_subrule fail with AttributeError
commented
Jan 9
in
Bug reports
component-computation
1
answer
Replacing expressions in a matrix
answer edited
Dec 29, 2023
in
General questions
matrix
latex
1
answer
Display "hand-made" latex
commented
Dec 29, 2023
in
General questions
latex
1
answer
Displaying a matrix with matplotlib error "non-GUI backend"
answer selected
Dec 25, 2023
in
General questions
installation
1
answer
Displaying components of the epsilon matrix
answer selected
Dec 25, 2023
in
General questions
get_component
tensor-components
1
answer
LaTeXForm expansion fails with "free indices do not match"
commented
Dec 22, 2023
in
General questions
latexform
runtime-error
1
answer
meld sets to zero when it shouldn't?
edited
Dec 7, 2023
in
Bug reports
meld
canonicalize
2
answers
A vector-field basis of derivatives?
answered
Dec 5, 2023
in
General questions
scalar-field
vector-field
partialderivative
2
answers
Is eliminate_metric supposed to move partial derivative indices?
answer edited
Dec 4, 2023
in
General questions
eliminate_metric
indices
partial
derivative
1
answer
Differentiate a propagator
answered
Nov 18, 2023
in
General questions
1
answer
eliminate_vielbein "eliminates" with a Minkowski metric
answered
Nov 16, 2023
in
General questions
eliminate_vielbein
2
answers
How to implement a zoom-sensitive algorithm
answer selected
Nov 13, 2023
in
General questions
algorithms
zoom-unzoom
1
answer
How to calculate the determinant of a tensor density?
commented
Nov 12, 2023
in
General questions
algorithms
determinant
1
answer
How could the partial derivatives be sorted?
commented
Nov 10, 2023
in
General questions
substitute
partialderivative
algorithms
sort
4
answers
Expansion of covariant derivative
commented
Nov 10, 2023
in
General questions
indices
python-functions
expand
covariant-derivative
1
answer
How to change the order of two indexes in a complex statement
answer edited
Oct 26, 2023
in
General questions
symmetry
1
answer
InverseMetric is not symmetric?
comment edited
Oct 24, 2023
in
Bug reports
indices
inversemetric
symmetry
2
answers
Zooming in on a specific term and applying a rule
commented
Oct 20, 2023
in
General questions
partialderivative
indices
2
answers
Getting two terms with derivatives to form a product
answer selected
Oct 17, 2023
in
General questions
partialderivative
collect_terms
...