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All questions asked by Solid State Physicist

List all solved & unsolved questions asked by Solid State Physicist

Total angular momentum operator

2   Physics Asked on 01/02/2021

angular momentum  hilbert space  operators  quantum mechanics  representation theory 

Degree of a determinant

1   Mathematics Asked on 11/26/2021

determinant  linear algebra 

Are basic feasible solutions, vertices, and extreme points equivalent for semidefinite programs (SDPs)?

1   Mathematics Asked on 11/26/2021

optimization  semidefinite programming 

Find all functions $f:mathbb{R}^+to mathbb{R}$ such that $xf(xf(x)-4)-1=4x$

2   Mathematics Asked on 11/26/2021

contest math  functional equations  real analysis 

Fourier transform of $1/ sqrt{m^2+p_1^2+p_2^2+p_3^2}$

1   Mathematics Asked on 11/26/2021

definite integrals  fourier transform  multiple integral  multivariable calculus 

Optimisation of norm of matrices without the elements on diagonals

0   Mathematics Asked on 11/26/2021

matrices  matrix norms  non convex optimization  optimization 

Given $frac{z_1}{2z_2}+frac{2z_2}{z_1} = i$ and $0, z_1, z_2$ form two triangles with $A, B$ the least angles of each. Find $cot A +cot B$

2   Mathematics Asked on 11/26/2021

analytic geometry  complex numbers  quadratics 

Notation for "and"

1   Mathematics Asked on 11/26/2021

notation 

Proving that, given a surjective linear map, a set is a generator of a vector space

1   Mathematics Asked on 11/26/2021

linear algebra 

Production function problem (Lagrange multiplier)

1   Mathematics Asked on 11/26/2021

calculus  economics  multivariable calculus  optimization 

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