Update app.py

app.py

@@ -64,8 +64,8 @@ def render_latex(text):
     text = re.sub(r'\b([a-zA-Z]+)\^?(\d*)\b', r'$\1^{\2}$', text)
     # Wrap functions: sin(x) → $\sin(x)$
     text = re.sub(r'([a-zA-Z]+)\(([^)]+)\)', r'$\1(\2)$', text)
-    # Wrap limits: lim(x→0) → $\lim_{x\to0}$
-    text = re.sub(r'lim\(([a-z])→([0-9.]+)\)', r'$\lim_{ \1 \to \2}$', text)
+    # Wrap limits: lim(x→0) → $\lim_{x \to 0}$
+    text = re.sub(r'lim\(([a-z])→([0-9.]+)\)', r'$\\lim_{ \1 \\to \2}$', text)
     return text
 
 def respond(message, history, system_message, max_tokens, temperature, top_p):