4 files changed, 15 insertions, 12 deletions
diff --git a/stdlib/source/lux/control/concurrency/actor.lux b/stdlib/source/lux/control/concurrency/actor.lux
index 6355a43b7..dac5f151b 100644
--- a/stdlib/source/lux/control/concurrency/actor.lux
+++ b/stdlib/source/lux/control/concurrency/actor.lux
@@ -12,8 +12,6 @@
      ["<c>" code (#+ Parser)]]]
    [data
     ["." product]
-    [number
-     ["n" nat]]
     [text
      ["%" format (#+ format)]]
     [collection
@@ -25,6 +23,9 @@
       ["csr" reader]
       ["csw" writer]
       ["|.|" export]]]]
+   [math
+    [number
+     ["n" nat]]]
    ["." meta (#+ with_gensyms monad)
     ["." annotation]]
    [type (#+ :share)
diff --git a/stdlib/source/lux/control/concurrency/atom.lux b/stdlib/source/lux/control/concurrency/atom.lux
index 3920c0214..3b690ea7d 100644
--- a/stdlib/source/lux/control/concurrency/atom.lux
+++ b/stdlib/source/lux/control/concurrency/atom.lux
@@ -18,10 +18,10 @@
                                   (new [a])
                                   (get [] a)
                                   (compareAndSet [a a] boolean)]))]
-                 (for {@.old <jvm>
-                       @.jvm <jvm>}
-                      
-                      (as_is)))
+  (for {@.old <jvm>
+        @.jvm <jvm>}
+       
+       (as_is)))
 
 (abstract: #export (Atom a)
   (for {@.old
diff --git a/stdlib/source/lux/control/concurrency/semaphore.lux b/stdlib/source/lux/control/concurrency/semaphore.lux
index 9e6ff9b29..5be5582de 100644
--- a/stdlib/source/lux/control/concurrency/semaphore.lux
+++ b/stdlib/source/lux/control/concurrency/semaphore.lux
@@ -9,11 +9,12 @@
    [data
     [text
      ["%" format (#+ format)]]
-    [number
-     ["n" nat]
-     ["i" int]]
     [collection
      ["." queue (#+ Queue)]]]
+   [math
+    [number
+     ["n" nat]
+     ["i" int]]]
    [type
     abstract
     ["." refinement]]]
diff --git a/stdlib/source/lux/control/concurrency/thread.lux b/stdlib/source/lux/control/concurrency/thread.lux
index 8bdd2b9c9..d1ab65886 100644
--- a/stdlib/source/lux/control/concurrency/thread.lux
+++ b/stdlib/source/lux/control/concurrency/thread.lux
@@ -8,10 +8,11 @@
     ["ex" exception (#+ exception:)]
     ["." io (#+ IO io)]]
    [data
-    [number
-     ["n" nat]]
     [collection
-     ["." list]]]]
+     ["." list]]]
+   [math
+    [number
+     ["n" nat]]]]
   [//
    ["." atom (#+ Atom)]])