Recent content by KodRoute

Thank you for posting Hallsoflvy, someone explained this problem to me in this way: "So an inversion is (i,j) with i<j and p(i)>p(j) and the sign is (-1)ⁿ with n the count of inversions. You have that permutation in tableau form, so you can read off what p(i) is for each i. If i<j with i,j in...

Hi! Thank you for replying, no I haven't done calculus yet. I thought these formulas came from looking at the geometry of these vectors.

No I don't know what cycle notation is. However, I do know about transpositions (if that's what you're referring to). Thx.

Homework Statement Find the sign of the permutation --> Picture here: http://tinypic.com/view.php?pic=2q8rkso&s=5 No other given data. Homework Equations ε(σ) = (-1)^m(σ). If i < j and σ(i) > σ(j) then there's an inversion. Where ε(σ) denotes the sign of the permutation and m(σ) the number of...

Hello, my book explains detailed the proofs of these three formulas: y = Asin(ωt + φo) v = ωAcos(ωt + φo) a = -ω²Asin(ωt + φo) Where a is acceleration, v is velocity, ω is angular velocity, A is amplitude. The book uses the following figures: Figure a) -->...