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 Mar 7 asked Differential cross section in momentum space? Feb 23 revised What math do I need for mathematical physics? In what manner should I learn math? I beleive "manner" was implied instead of matter. Feb 23 suggested approved edit on What math do I need for mathematical physics? In what manner should I learn math? Feb 22 accepted Irreducible tensors concept Feb 22 comment Time Varying Potential, series solution @MaksimZholudev That was a typo. Thanks for pointing it out. Feb 22 revised Time Varying Potential, series solution added 221 characters in body Feb 22 asked Time Varying Potential, series solution Feb 15 accepted Degree of freedom paradox for a rigid body Feb 13 comment Degree of freedom paradox for a rigid body Thanks though the number of degrees of freedom comes out to be 3. A rigid body is known to have 6 (3trans+3rot). Feb 13 asked Degree of freedom paradox for a rigid body Feb 13 revised Why can't we ascribe a (possibly velocity dependent) potential to a dissipative force? deleted 63 characters in body Feb 13 comment Why can't we ascribe a (possibly velocity dependent) potential to a dissipative force? @Anna so velocity dependent potentials are actually used to describe conservative forces, is what you meant, right? I will edit my question. Feb 13 asked Why can't we ascribe a (possibly velocity dependent) potential to a dissipative force? Jan 4 awarded Popular Question Dec 19 comment Decay Amplitudes Notation @DavidZaslavsky Yes It may be $B^- (b\bar{u}) ,B^0(b\bar{d})$ etc. $B_p$ means a b quark with a u/d quark Dec 19 asked Decay Amplitudes Notation Dec 13 comment Physics history book with some math @Qmechanic It reminds me when Sheldon embarked on such a project. Dec 13 answered Physics history book with some math Dec 13 asked Irreducible tensors concept Dec 9 accepted Pauli Matrices in orthogonal space