Contraction of Kronecker delta = 4
123954
Kronecker delta confusion
23451
The new introduced EulerMatrix problem
3201
Landau & Lifshitz's Approach (contour method) on the WKB connection formulas
89920
How does the uncertainty product $\Delta x \Delta p$ behave for the bound states of the triangular potential?
66471
Is trace of regular representation in Lie group a delta function?
63304
The Dirac-delta function as an initial state for the quantum free particle
103308
Showing that $\nabla\times(\nabla\times\vec{A}) = \nabla(\nabla\cdot\vec{A})-\Delta\vec{A}$
154841
Computing symmetry/combinatorial factor for a diagram in $\phi^4$ theory
85332
Is $\mathbb{R}^4$ minus a line simply connected?
112216
Geometric description of canonical commutation relation
119684
Is a contraction idempotent operator self-adjoint?
22842
The Interpretation of $|\psi|^2$ and the No-Clone Theorem
2786
The staircase paradox, or why $\pi\ne4$
146926
Why don't products of Dirac deltas integrate correctly?
43382
Runge-Kutta fourth order with negative stepsize
134162
What is a basis for the space of $n\times n$ Hermitian matrices?
155669
$\mathrm{Aut}(D_4)$ is isomorphic to $D_4$