Supported by National Science Foundation of China(10571040)
In this paper,a strong converse inequality of type B in terms of a new Kfunctional Kλα f,t2(0 < α < 2,0 ≤λ≤ 1) for certain mixed Szász-Beta operators is given.By this inequality,the converse theorem can be obta...
Supported by the NNSF of China(10371080);Supported by the Educational Committee Foundation of Beijing(01KJ-101)
In this paper, the integral-type Stancu operators on a simplex is considered and its inverse theorem of approximation in Lp(1≤ p 〈+∞)has been obtained.