diff --git a/collects/mrlib/tex-table.rkt b/collects/mrlib/tex-table.rkt
index d66f80ff82..6a12873918 100644
--- a/collects/mrlib/tex-table.rkt
+++ b/collects/mrlib/tex-table.rkt
@@ -92,7 +92,7 @@
     ("Lambda" "Λ")
     ("Sigma" "Σ")
     ("Psi" "Ψ")
-    ("Delta" "Δ")
+    ("Delta" "Δ") ; <- this character is Unicode "increment", not Greek delta
     ("Xi" "Ξ")
     ("Upsilon" "Υ")
     ("Omega" "Ω")
diff --git a/collects/scribble/latex-render.rkt b/collects/scribble/latex-render.rkt
index 03efbb2eac..49fc1e278c 100644
--- a/collects/scribble/latex-render.rkt
+++ b/collects/scribble/latex-render.rkt
@@ -853,6 +853,12 @@
                             [(#\♭) "$\\flat$"]
                             [(#\♮) "$\\natural$"]
                             [(#\√) "$\\surd$"]
+                            [(#\Δ) "$\\Delta$"] ; no better mapping for than \Delta for "increment"
+                            [(#\u2211) "$\\sum$"] ; better than \Sigma, right?
+                            [(#\u220F) "$\\prod$"] ; better than \Pi, right?
+                            [(#\u2210) "$\\coprod$"]
+                            [(#\u222B) "$\\int$"]
+                            [(#\u222E) "$\\oint$"]
                             [(#\¬) "$\\neg$"]
                             [(#\△) "$\\triangle$"]
                             [(#\∀) "$\\forall$"]