diff --git a/2024/slides/l28-slt.pdf b/2024/slides/l28-slt.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..363d321dfd6055feb80eff123c0a38900fd5d5ad
Binary files /dev/null and b/2024/slides/l28-slt.pdf differ