added copyright note

1 files changed, 18 insertions, 0 deletions

diff --git a/ripser.cpp b/ripser.cpp
index 68d0811..9fa2f3b 100644
--- a/ripser.cpp
+++ b/ripser.cpp
@@ -1,3 +1,21 @@
+/*  Ripser: a lean C++ code for the computation of Vietoris-Rips persistence barcodes
+
+    Copyright 2015-2016 Ulrich Bauer.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+
 //#define ASSEMBLE_REDUCTION_MATRIX
 //#define USE_COEFFICIENTS