diff --git a/presentation/img/ERModel.png b/presentation/img/ERModel.png
index 16d07e2103641f4a3844cff81cc7615b5d3dca6b..f8944313142fa1e59e79ddc9c3bc45b2e3ecf6ec 100644
Binary files a/presentation/img/ERModel.png and b/presentation/img/ERModel.png differ
diff --git a/presentation/u10_valentin_anton_lena.synctex(busy) b/presentation/u10_valentin_anton_lena.synctex(busy)
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391