The equalities (15) and (16) should be deleted from Lemma 3 which will be reformatted as follows.
Lemma 3. Let , , and be given. Assume that . Then,
The equalities (15) and (16) should be deleted from Lemma 3 which will be reformatted as follows.
Lemma 3. Let , , and be given. Assume that . Then,