| 单词 | invariant measure |
| 释义 | invariant measure [in`ver·ē·ǝnt `mezh·ǝr] MATHEMATICS A Borel measure m on a topological space X is invariant for a transformation group (G,X,π) if for all Borel sets A in X and all elements g in G, m(Ag) = m(A ), where Ag is the set of elements equal to π(g,x) for some x in A. |
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