diff --git a/apps/web/src/routes/(main)/math/+page.svelte b/apps/web/src/routes/(main)/math/+page.svelte
index b285118..99f6a8a 100644
--- a/apps/web/src/routes/(main)/math/+page.svelte
+++ b/apps/web/src/routes/(main)/math/+page.svelte
@@ -77,6 +77,27 @@ type Talk = {
 };
 
 const talks: Talk[] = [
+  {
+    title: "命題化とカット除去による N+Am,n の一様 Lyndon 補間定理の証明",
+    talkers: ["Yuta Sato"],
+    conference: {
+      name: "日本数学会 2025年度秋季総合分科会",
+      url: "https://www.mathsoc.jp/activity/meeting/nagoya25sept/index.html",
+    },
+    location: "名古屋大学",
+    date: new Date(2025, 9 - 1, 18),
+  },
+  {
+    title: "Uniform Lyndon Interpolation for N+Am,n",
+    talkers: ["Yuta Sato"],
+    conference: {
+      name: "18th Asian Logic Conference",
+      url: "https://www2.kobe-u.ac.jp/~brendle/alc2025/main.html",
+    },
+    location: "Kyoto Sangyo University",
+    date: new Date(2025, 9 - 1, 12),
+    slide: "/math/alc2025.pdf",
+  },
   {
     title: "Analysis of the pure logic of necessitation and its extensions",
     talkers: ["Yuta Sato"],
diff --git a/apps/web/static/math/alc2025.pdf b/apps/web/static/math/alc2025.pdf
new file mode 100644
index 0000000..4604379
Binary files /dev/null and b/apps/web/static/math/alc2025.pdf differ