6 files changed, 13 insertions, 13 deletions
diff --git a/algebraic-structures.monoid.list.base.scm b/algebraic-structures.monoid.list.base.scm
index b7d7895..900c12e 100644
--- a/algebraic-structures.monoid.list.base.scm
+++ b/algebraic-structures.monoid.list.base.scm
@@ -1,5 +1,5 @@
-(module (algebraic-structures monoid list base) (op unit)
+(module (algebraic-structures monoid list base) (<> unit)
   (import scheme)
 
-  (define op append)
+  (define <> append)
   (define unit '()))
diff --git a/algebraic-structures.monoid.make.fold.scm b/algebraic-structures.monoid.make.fold.scm
index 4a6cce6..0334ab6 100644
--- a/algebraic-structures.monoid.make.fold.scm
+++ b/algebraic-structures.monoid.make.fold.scm
@@ -1,4 +1,4 @@
-(functor ((algebraic-structures monoid make fold) (M (op unit)) (F (foldl foldr))) (fold)
+(functor ((algebraic-structures monoid make fold) (M (<> unit)) (F (foldl foldr))) (fold)
   (import scheme M F)
 
-  (define (fold x) (foldl op unit x)))
+  (define (fold x) (foldl <> unit x)))
diff --git a/algebraic-structures.monoid.make.scm b/algebraic-structures.monoid.make.scm
index ef3e8a3..58575ba 100644
--- a/algebraic-structures.monoid.make.scm
+++ b/algebraic-structures.monoid.make.scm
@@ -1,3 +1,3 @@
-(functor ((algebraic-structures monoid make) (F (op unit)))
-    (op unit)
+(functor ((algebraic-structures monoid make) (F (<> unit)))
+    (<> unit)
   (import F))
diff --git a/algebraic-structures.monoid.number.product.base.scm b/algebraic-structures.monoid.number.product.base.scm
index fb4a4bc..796a6c9 100644
--- a/algebraic-structures.monoid.number.product.base.scm
+++ b/algebraic-structures.monoid.number.product.base.scm
@@ -1,5 +1,5 @@
-(module (algebraic-structures monoid number product base) (op unit)
+(module (algebraic-structures monoid number product base) (<> unit)
   (import scheme)
 
-  (define op *)
+  (define <> *)
   (define unit 1))
diff --git a/algebraic-structures.monoid.number.sum.base.scm b/algebraic-structures.monoid.number.sum.base.scm
index 8a7b68e..6fb1c59 100644
--- a/algebraic-structures.monoid.number.sum.base.scm
+++ b/algebraic-structures.monoid.number.sum.base.scm
@@ -1,5 +1,5 @@
-(module (algebraic-structures monoid number sum base) (op unit)
+(module (algebraic-structures monoid number sum base) (<> unit)
   (import scheme)
 
-  (define op +)
+  (define <> +)
   (define unit 0))
diff --git a/tests/run.scm b/tests/run.scm
index 6c306b5..ed2cd8f 100644
--- a/tests/run.scm
+++ b/tests/run.scm
@@ -74,9 +74,9 @@
 
 (test-begin "monoid.list")
 
-(test '(a b c 1 2 3) (list:op '(a b c) '(1 2 3)))
-(test '(a b c x y z 1 2 3) (list:op (list:op '(a b c) '(x y z)) '(1 2 3)))
-(test '(a b c x y z 1 2 3) (list:op '(a b c) (list:op '(x y z) '(1 2 3))))
+(test '(a b c 1 2 3) (list:<> '(a b c) '(1 2 3)))
+(test '(a b c x y z 1 2 3) (list:<> (list:<> '(a b c) '(x y z)) '(1 2 3)))
+(test '(a b c x y z 1 2 3) (list:<> '(a b c) (list:<> '(x y z) '(1 2 3))))
 
 (test-end "monoid.list")