Liang, You-dong Some theorems on geometrical objects. (English) Zbl 0095.15601 Science Record, n. Ser. 3, 525-530 (1959). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:differential geometry × Cite Format Result Cite Review PDF