We construct some Cheney–Sharma-type operators defined on a triangle with two or three curved edges, their product, and Boolean sum. We study the interpolation properties of these operators and the degree of exactness.

中文翻译：

---

具有两个或三个弯曲边缘的三角形上的Cheney–Sharma型算子

我们构造了一些定义在具有两个或三个弯曲边缘，其乘积和布尔和的三角形上的Cheney–Sharma型算子。我们研究了这些算子的插值性质和精确度。