diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..66048994fda298de3668e0623369be550b16b982
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.o
+*.xopp*
diff --git a/slides/metadata.yaml b/slides/metadata.yaml
index fdbc1d695313ae7c922d3770e2d3ada8534a9b7e..fb966bcfaf4429e7bff3faf9b8ceeed4484a184b 100644
--- a/slides/metadata.yaml
+++ b/slides/metadata.yaml
@@ -1,6 +1,6 @@
 ---
 subtitle: "Algorithmique et structures de données, 2021-2022"
-author: "Paul Albuquerque (B410) et Orestis Malaspinas (A401), ISC, HEPIA"
+author: "Paul Albuquerque (B410), Pierre Künzli et Orestis Malaspinas (A401), ISC, HEPIA"
 institute: En partie inspirés des supports de cours de P. Albuquerque
 lang: fr-CH
 revealjs-url: /reveal.js