In this example, <math>H</math> and <math>G</math> are equivalent, <math>H\equiv G</math>, and the duals are strongly isomorphic: <math>H^*\cong G^*</math>. | In this example, <math>H</math> and <math>G</math> are equivalent, <math>H\equiv G</math>, and the duals are strongly isomorphic: <math>H^*\cong G^*</math>. |