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+====== BraketDiagonal ======
+###
+//BraketDiagonal(psi1List, O, psi2List)// calculates the expectation value or matrix element $\left\langle \psi_1[i] \mid O \mid \psi_2[i] \right\rangle$ for all $i$. Whereby $I$ is the minimum of the length of the two tables. If //#psi1List// is not equal to //#psi2List// a warning is given. If psi1List or psi2List is a function instead of a list of functions the value returned is the same as one would get for //Braket//.
+###
+===== Input =====
+  * psi1 or psiList1 : Wavefunction or list of Wavefunctions
+  * O : Operator
+  * psi2 or psiList2 : Wavefunction or list of Wavefunctions
+===== Output =====
+  * real or complex number, or a list of these
+===== Example =====
+###
+see //Braket//
+###
+==== Input ====
+<code Quanty Example.Quanty>
+-- see the example for Braket
+</code>
+==== Result ====
+<file Quanty_Output>
+see the example for Braket
+</file>
+===== Table of contents =====
+{{indexmenu>.#1}}