X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=mjo%2Feja%2FTODO;h=f0901ca91b793debc4877a8ee5a670d240fa51fc;hb=f1ddf1e9eee634161aad87b9c2de0194efb17879;hp=3c63d3b97796031de5ecf914f3051d8e47b93967;hpb=5db579120b28cbf24ef89b122d51d036e69f3190;p=sage.d.git diff --git a/mjo/eja/TODO b/mjo/eja/TODO index 3c63d3b..f0901ca 100644 --- a/mjo/eja/TODO +++ b/mjo/eja/TODO @@ -14,7 +14,7 @@ 6. Pass already_echelonized (default: False) and echelon_basis (default: None) into the subalgebra constructor. The value of already_echelonized can be passed to V.span_of_basis() to save - some time, and usinf e.g. FreeModule_submodule_with_basis_field + some time, and using e.g. FreeModule_submodule_with_basis_field we may somehow be able to pass the echelon basis straight in to save time. @@ -30,9 +30,13 @@ the usual one. Then for the basis to be orthonormal, we would need to divide e.g. (1,0,0) by <(1,0,0),(1,0,0)> = 2 to normalize it. -8. Use charpoly for inverse itself? +8. Pre-cache charpoly for some small algebras? -9. Pre-cache charpoly for some small algebras? +9. Compute the scalar in the general natural_inner_product() for + matrices, so no overrides are necessary. -10. Compute the scalar in the general natural_inner_product() for - matrices, so no overrides are necessary. \ No newline at end of file +10. The main EJA element constructor is happy to convert between + e.g. HadamardEJA(3) and JordanSpinEJA(3). + +11. Figure out if CombinatorialFreeModule's use of IndexedGenerators + can be used to replace the matrix_basis().