Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with tensors
Search options not deleted
user 63584
Use this tag for questions that involve tensors. Tensors are fundamental tools for linear computations, generalizing vectors and matrices to higher ranks. Mathematica 9 introduces powerful methods to algebraically manipulate tensors with any rank and symmetry.
2
votes
Accepted
Simplifying cross product expressions II
Note that you can give assumptions to TensorExpand:
TensorExpand[Cross[F3[R + 3 a], F[R + 4 a] - F2[R + 2 a]],
Assumptions -> {a \[Element] Reals}]
(* Out:
-F[R]\[Cross]F3[R] - 3 a F[R]\[Cross]De …
- 9,080
6
votes
Accepted
Efficient way to MapApply for Tensor
Note that f[#1, #2, #3, #4] & is just f—this substitution by itself saves some time—and that Apply (@@@) has a secret levelspec argument! You want {2}, i.e. Apply[f, ATensor, {2}].
Note also that you' …
- 9,080
6
votes
Accepted
How to state nontrivial tensor symmetry assumptions?
From a small note in the documentation for Arrays,
The symmetry sym can be given in several forms. First, it can be given as expressions like Symmetric[{s_i, ..., s_k}] or Antisymmetric[{s_i,...,s …
- 9,080