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seen Oct 31 '12 at 3:32

Jul
2
awarded  Curious
Dec
29
awarded  Popular Question
Oct
20
comment EFA and recursive algorithm
any comment????
Oct
19
comment EFA and recursive algorithm
Elementary function arithmetic
Oct
19
awarded  Tumbleweed
Oct
19
asked EFA and recursive algorithm
Oct
17
accepted general equation of a tangent line to a hyperbola
Oct
16
revised general equation of a tangent line to a hyperbola
added 158 characters in body; edited title
Oct
16
asked general equation of a tangent line to a hyperbola
Oct
15
accepted A group of matrices satisfying a particular constraint(definition) of the group
Oct
15
accepted Why were Lie algebras called infinitesimal groups?
Oct
15
asked A group of matrices satisfying a particular constraint(definition) of the group
Oct
15
asked Non-trigonometric/vector way of solving a property of a tangent line on an ellipse
Oct
15
awarded  Supporter
Oct
15
revised Proving a property of an ellipse and a tangent line of the ellipse
deleted 175 characters in body
Oct
15
accepted Proving a property of an ellipse and a tangent line of the ellipse
Oct
15
revised Proving a property of an ellipse and a tangent line of the ellipse
added 175 characters in body
Oct
15
accepted Conditions for the allowance of eigenvalue exponentiation
Oct
15
asked Conditions for the allowance of eigenvalue exponentiation
Oct
15
comment Eigenstate and quantum mechanics position opperator
About $|q\rangle \langle q|$: what does this operator mean? I do get that it results in an operator, but unsure of what physical meaning it has. The same with $|\psi \rangle \langle \psi |$