diff --git a/EDP/Slides/slides_chap1.pdf b/EDP/Slides/slides_chap1.pdf
old mode 100644
new mode 100755
index cab708634192d1e73ef61b6c38cdab5d2f6a2d5d..f873a6fa5d9b87f02cf9bff704b695b317b19723
Binary files a/EDP/Slides/slides_chap1.pdf and b/EDP/Slides/slides_chap1.pdf differ