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Why are Invariants so special? 
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#1
Apr2514, 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 GB theorem. so could some one explain why they are special.



#2
Apr2514, 05:16 PM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,682

"Invariants" don't change! That makes them much easier to work with than things that are changing.



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