diff --git a/xlsx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-math.xsd b/xlsx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-math.xsd
new file mode 100644
index 0000000..eea35d7
--- /dev/null
+++ b/xlsx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-math.xsd
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ xmlns="http://schemas.openxmlformats.org/officeDocument/2006/math"
+ targetNamespace="http://schemas.openxmlformats.org/officeDocument/2006/math"
+ elementFormDefault="qualified">
+ <xsd:element name="math" type="CT_Math"/>
+ <xsd:complexType name="CT_Math">
+  <xsd:sequence>
+   <xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+  </xsd:sequence>
+ </xsd:complexType>
+</xsd:schema>