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Why are Invariants so special?

by NoodleDurh
Tags: invariants, special
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NoodleDurh
#1
Apr25-14, 03:16 PM
P: 19
I only ask, because I noticed that the Euler Characteristic is an invariant and pops up in differential geometry as the G-B theorem. so could some one explain why they are special.
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HallsofIvy
#2
Apr25-14, 05:16 PM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,533
"Invariants" don't change! That makes them much easier to work with than things that are changing.


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