diff --git a/2025/slides/l01-introduction.pdf b/2025/slides/l01-introduction.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..9ce1aba786cd1042c340d48e30ccbe67dd5884e0
Binary files /dev/null and b/2025/slides/l01-introduction.pdf differ