src/Doc/Logics/document/root.tex

--- a/src/Doc/Logics/document/root.tex	Mon May 17 23:38:16 2021 +0200
+++ b/src/Doc/Logics/document/root.tex	Tue May 18 15:17:55 2021 +0200
@@ -8,7 +8,7 @@
 %%% to index constants:   \\tt \([a-zA-Z0-9][a-zA-Z0-9_]*\)     \\cdx{\1}  
 %%% to deverbify:         \\verb|\([^|]*\)|     \\ttindex{\1}  
 %% run    ../sedindex logics    to prepare index file
-\title{\includegraphics[scale=0.5]{isabelle} \\[4ex] Isabelle's Logics}
+\title{\includegraphics[scale=0.5]{isabelle_logo} \\[4ex] Isabelle's Logics}
 
 \author{{\em Lawrence C. Paulson}\\
         Computer Laboratory \\ University of Cambridge \\