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diff --git a/src/main/java/org/apache/commons/math3/ode/MainStateJacobianProvider.java b/src/main/java/org/apache/commons/math3/ode/MainStateJacobianProvider.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.math3.ode;
+
+import org.apache.commons.math3.exception.DimensionMismatchException;
+import org.apache.commons.math3.exception.MaxCountExceededException;
+
+/**
+ * Interface expanding {@link FirstOrderDifferentialEquations first order differential equations} in
+ * order to compute exactly the main state jacobian matrix for {@link JacobianMatrices partial
+ * derivatives equations}.
+ *
+ * @since 3.0
+ */
+public interface MainStateJacobianProvider extends FirstOrderDifferentialEquations {
+
+    /**
+     * Compute the jacobian matrix of ODE with respect to main state.
+     *
+     * @param t current value of the independent <I>time</I> variable
+     * @param y array containing the current value of the main state vector
+     * @param yDot array containing the current value of the time derivative of the main state
+     *     vector
+     * @param dFdY placeholder array where to put the jacobian matrix of the ODE w.r.t. the main
+     *     state vector
+     * @exception MaxCountExceededException if the number of functions evaluations is exceeded
+     * @exception DimensionMismatchException if arrays dimensions do not match equations settings
+     */
+    void computeMainStateJacobian(double t, double[] y, double[] yDot, double[][] dFdY)
+            throws MaxCountExceededException, DimensionMismatchException;
+}