A mapping of a mathematical group; ring; or vector space onto another in such a way that the result obtained by applying an operation to elements of the domain is mapped onto the result obtained by applying the operation to their images in the range.

【数】同态(将一数群；数环或向量空间映对入另一数群；数环或向量空间中；使由整环元素的运算所得的结果被映到它们在值域中的象点运算的结果上)。