What does it mean a left invariant vector field? What properties does this vector field have?

thank you

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- May 4th 2011, 12:12 AMraymanwhy do we call a vector field - left invariant?
What does it mean a left invariant vector field? What properties does this vector field have?

thank you - May 4th 2011, 01:32 AMAckbeet
- May 4th 2011, 06:30 AMrayman
- May 4th 2011, 06:37 AMAckbeet
Oh. That's a very different question from the one in the OP - it would have been better to ask this question first. Then I, who know nothing whatsoever about left invariant vector fields, would have not piped up at all. You need an expert like Drexel28 or maybe tonio to answer this.

- May 4th 2011, 09:45 AMrayman
well I found some explanaition which sounds quite okej but I am not sure if it is correct....

- May 4th 2011, 01:00 PMDrexel28
- May 5th 2011, 12:20 AMrayman
yes I know, but that does not explain what happens then, how to interpret it physically?