| 1 | The volume of prismoid was calculated by using segmentation method, and the model of spatial valid vision was established. | |
| 2 | A hexagonal prism is designed as the combining and splitting component to achieve a ˉll factor of 0.66. | |
| 3 | In ancient Babylonian mathematics, the expression of volume formula for the frustum of a square pyramid is much more complicated than its modern form. | |
| 4 | A method of producing 2D and 3D optical lattices with multi-beam interference by using the pyramid lens and the top-chopped pyramid lens is proposed. | |
| 5 | In ancient Babylonian mathematics, the expression of volume formula for the frustum of a square pyramid is much more complicated than its modern form. |