The culmination of the work on singularities is two famous transformation theorems.奇點(diǎn)研究的頂峰是兩個(gè)著名的變換定理.But, by calling singularities into question, they spell trouble for relativity.然而對(duì)奇點(diǎn)這一問題的爭議卻給相對(duì)論提出了質(zhì)疑.These results sho...