Différences

Ci-dessous, les différences entre deux révisions de la page.

--- teaching:methcalchim:eigenvalues_and_eigenvectors [2018/11/27 06:51] – [Applications] villersd
+++ teaching:methcalchim:eigenvalues_and_eigenvectors [2018/11/27 09:36] – villersd
@@ Ligne 17: / Ligne 17: @@
 ===== Python libraries =====
+  * NumPy (more portability)
+    * [[https://docs.scipy.org/doc/numpy/reference/routines.linalg.html|numpy.linalg]]
+      * [[https://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.eig.html|linalg.eig(a)]] Compute the eigenvalues and right eigenvectors of a square array
+  * SciPy (more complete wrapper on [[wp>LAPACK|LAPACK]] fortran package)
+    * [[https://docs.scipy.org/doc/scipy/reference/linalg.html|scipy.linalg]]
+      * [[https://docs.scipy.org/doc/scipy/reference/generated/scipy.linalg.eig.html|scipy.linalg.eig]] Solve an ordinary or generalized eigenvalue problem of a square matrix
+      * [[https://docs.scipy.org/doc/scipy/reference/linalg.html#decompositions|Decompositions]] (LU, QR,...)
 ===== References =====
+  * Numerical recipes, The Art of Scientific Computing 3rd Edition, William H. Press, Saul A. Teukolsky, William T. Vetterling, Brian P. Flannery, 2007, isbn: 9780521880688
+    * [[http://numerical.recipes/]]
+    * [[http://www2.units.it/ipl/students_area/imm2/files/Numerical_Recipes.pdf]], chapter 11 Eigensystems p 456...
+    * [[http://apps.nrbook.com/empanel/index.html#]]
+  * Python NumPy vs SciPy : //cf.// [[https://stackoverflow.com/questions/6684238/whats-the-fastest-way-to-find-eigenvalues-vectors-in-python]]