An Inequality Concerning the Center of Simplex's Circumscribed Sphere

Let A={A_1, A_2,…, A_(n+1)} be a simplex in E^n which its center O of circumscribed sphere is in inside of A. If R and R_i are radiuses of A_i respectively (A_i={A_1, A_2,…, A_(i-1), O, A_(i+1),…,A_(n+1)} ,i=1,2,…,n+1),then we have The equality holds if and only if A is a regular simplex.

创造新时代小区设计风格——中信东泰花园7-8街区规划设计

本文通过对中信东泰花园7-8街区设计方案创意的阐述,从策划思路、总体布局、道路交通系统、外部空间环境设计、住宅单体设计等方面,探讨住宅小区的新时代设计风格。