diff --git a/o4_model_mass_bounds_v2.txt b/o4_model_mass_bounds_v2.txt
index 071a800..6d95dec 100644
--- a/o4_model_mass_bounds_v2.txt
+++ b/o4_model_mass_bounds_v2.txt
@@ -45,8 +45,7 @@
 \allowdisplaybreaks[2]
 \title{Sharp mass bounds for the two-dimensional $O(4)$ model\\[4pt]
        \large a complete proof, written to be read}
-\author{OpenAI}
-\date{September 23, 2026}
+
 \begin{document}
 \maketitle