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Mapping and functions..... |
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| Feb28-05, 03:48 PM | #1 |
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Mapping and functions.....
Why do were define one-one and many-one mappings as functions? Why do we separate them into a different group and make them special?
Thanks in advance. 
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| Feb28-05, 04:51 PM | #2 |
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1-1 functions allow us to compare sets. Also, 1-1 functions are invertible on the image of their domain. Invertibility is a "nice" feature in many areas of study.
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