羅巴切夫斯基 [ㄌㄨㄛˊ ㄅㄚ ㄑㄧㄝˋ ㄈㄨ ㄙ ㄐㄧ; luo2 ba1 qie4 fu1 si1 ji1] Nikolai Ivanovich Lobachevsky (1793-1856), one of the discoverers of non-Euclidean geometry ◄ ►