推广了Rn中凸体K的i-曲率函数fi(K,·)(i=0,1,…,n-1)和Lp-曲率函数fp(K,·)(p≥1)的概念,引进了Rn中凸体K的Lp-混合曲率函数fp,i(K,·)(i=0,1,…,n-1,p≥1)的概念,研究了Lp-混合投影体∏p,iKС∏p,iL是否一定→{Wi(K)≤Wi(L),当1≤p〈n-i时; Wi(K)≥Wi(L),当n-i〈p时 的广义Shephard问题。获得的结果是Ryabogin和Zvavitch关于Lp-投影体算子∏p的Shephard问题的推广形式。
The generaligation of i-curvature function fi (K, · ) ( i = 0, 1, ..., n - 1 ) and Lp-curvature function fp ( K,· ) to Lp-mixed curvature function fp,i ( K, · ) of a convex body K in Rn are introduced, and the question of whether ∏p,iKС∏p,iLinplies→{Wi(K)≤Wi(L),if 1≤p〈n-i; Wi(K)≥Wi(L),if n-i〈p is investigated.