diff --git a/Files_4_thesis/Pictures/Ar.png b/Files_4_thesis/Pictures/Ar.png new file mode 100644 index 0000000000000000000000000000000000000000..155bba8e87c6a2d5f7b20c83c7ca97b02d9b9618 Binary files /dev/null and b/Files_4_thesis/Pictures/Ar.png differ