From 59488a30f446deb59c4069655263776f4fe9dff2 Mon Sep 17 00:00:00 2001
From: Joseph Weston <joseph.weston08@gmail.com>
Date: Fri, 3 May 2013 22:09:57 +0200
Subject: [PATCH] corrected documentation for
 `kwant.system.InfiniteSystem.self_energy`

---
 kwant/system.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kwant/system.py b/kwant/system.py
index 1d6fd106..92511788 100644
--- a/kwant/system.py
+++ b/kwant/system.py
@@ -148,8 +148,9 @@ class InfiniteSystem(System):
     def self_energy(self, energy, args=()):
         """Return self-energy of a lead.
 
-        The returned matrix has the shape (n, n), where n is
-        ``sum(self.num_orbitals(i) for i in range(self.slice_size))``.
+        The returned matrix has the shape (s, s), where s is
+        ``sum(self.num_orbitals(i)
+              for i in range(self.graph.num_nodes - self.slice_size))``.
         """
         ham = self.slice_hamiltonian(args=args)
         shape = ham.shape
-- 
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