An MO answer by Terry Tao regarding what the Laplacian measures
64835
Intuitive interpretation of the Laplacian
84984
What does $\partial_{\mu}$ mean?
109853
Laplace transform of $\cos(at)$
61209
Interpretation of the Dirac-measure property
158494
Properties of special rectangle (measure)
61070
Lorentz invariance of the integration measure
89920
How does the uncertainty product $\Delta x \Delta p$ behave for the bound states of the triangular potential?
51533
Why is the cone measurable?
132595
$\sup_{0 \leq M \leq I_{\mathcal{H}_1}} \frac{\operatorname{Tr}[\rho M]}{\operatorname{Tr}[\sigma M]}$ satisfies Data Processing Inequality
148361
Localization and direct limit
3310
Application of Liouville's Theorem
29583
Characterization of the trace function
2232
A question on limsup
10587
Bound states of the $V(x)=\pm \delta'^{(n)}(x)$ potential?
16443
Laplacian in polar coordinates
98098
Show that $\mu_{F}$ is a measure on $(\mathbb{R},\mathcal{S})$.
125529
A question about the idea of Laplace transform