diff --git a/packages/core/pattern.mjs b/packages/core/pattern.mjs
index a3798488..fc788751 100644
--- a/packages/core/pattern.mjs
+++ b/packages/core/pattern.mjs
@@ -714,21 +714,6 @@ export class Pattern {
   _velocity(velocity) {
     return this._withContext((context) => ({ ...context, velocity: (context.velocity || 1) * velocity }));
   }
-
-  add(other) {
-    return this._asNumber()._opLeft(other, (a) => (b) => a + b);
-  }
-
-  sub(other) {
-    return this._asNumber()._opLeft(other, (a) => (b) => a - b);
-  }
-  mul(other) {
-    return this._asNumber()._opLeft(other, (a) => (b) => a * b);
-  }
-
-  div(other) {
-    return this._asNumber()._opLeft(other, (a) => (b) => a / b);
-  }
 }
 
 // pattern composers
@@ -741,7 +726,6 @@ const composers = {
 };
 
 for (const [name, op] of Object.entries(composers)) {
-  console.log(`Adding ${name}`);
   Pattern.prototype[name] = function (other) {
     return op[1](this)._opLeft(other, op[0]);
   };
diff --git a/packages/core/test/pattern.test.mjs b/packages/core/test/pattern.test.mjs
index f2b255d2..e8e0ff0f 100644
--- a/packages/core/test/pattern.test.mjs
+++ b/packages/core/test/pattern.test.mjs
@@ -161,11 +161,11 @@ describe('Pattern', function () {
       assert.equal(pure(3).div(pure(2)).firstCycle()[0].value, 1.5);
     });
   });
-  describe('union()', function () {
-    it('Can union things', function () {
+  describe('set()', function () {
+    it('Can set things', function () {
       assert.deepStrictEqual(
         pure({ a: 4, b: 6 })
-          .union(pure({ c: 7 }))
+          .set(pure({ c: 7 }))
           .firstCycle()[0].value,
         { a: 4, b: 6, c: 7 },
       );