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WHY-Op109 · Jun 17, 2024 · a933399 · a933399
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diff --git a/..._2/Groups_and_Rings/Part_I_Group_Theory/II_The_Morphisms_Relations_of_Groups.md b/..._2/Groups_and_Rings/Part_I_Group_Theory/II_The_Morphisms_Relations_of_Groups.md
@@ -0,0 +1,4 @@
+---
+title: II. The Morphisms Relations of Groups
+layout: simple
+---
diff --git a/...ar_2/Groups_and_Rings/Part_I_Group_Theory/I_Groups_as_An_Algebraic_Structure.md b/...ar_2/Groups_and_Rings/Part_I_Group_Theory/I_Groups_as_An_Algebraic_Structure.md
@@ -8,6 +8,7 @@ $$\gdef\dfs{\blue{:=}}$$
 $$\gdef\ifif{\blue{\iff}}$$
 $$\gdef\imp{\blue{\implies}}$$
 $$\gdef\diff{\blue{:\longleftrightarrow}}$$
+$$\gdef\op#1{\blue{\operatorname{#1}}}$$
 $$\gdef\limp{\blue{\Longleftarrow}}$$
 $$\gdef\st{\blue{\texttt{s.t.}}}$$
 $$\gdef\the{\blue{\Rightarrow}}$$