$\Delta U = n C_v \Delta T $ non-constant volume
24442
Work done in adiabatic process
93590
system of ode with non-constant coefficient matrix
79711
How to show $\omega^n$ is a volume form in a symplectic manifold $(M, \omega)$?
142821
Why?$\int_0^1\int_{u(t)}^{u(t)+w(t)} f(t,v(t)) dv dt = \int_0^1 f(t,u(t)+\theta w(t))w(t) dt; ~~\theta\in[0,1] $
109570
How to show that the set of points of continuity is a $G_{\delta}$
11710
How to show that $\mathbb{Q}$ is not $G_\delta$
91500
Let $U, V \sim U(0,1)$ be independent. What is $P(U \leq V)$?
116513
Distributional Laplacian of logarithm and the Dirac delta distribution
156636
The Existence of the $^1D$ term and the non-existence of the $^3D$ term?
153727
Constant term in Lagrangian
74540
Pullback of a Volume Form Under a Diffeomorphism.
38482
What is $\Delta t$ in the time-energy uncertainty principle?
69945
A PDE exercise from Gilbarg Trudinger. problem 2.2
6937
General solution to the PDE $xU_x+yU_y=0$
101888
Least action principle : is $ \delta \frac{dx}{dt} = \frac{d \delta x}{dt} $ always true?
14576
$(U\cap W)^0 = U^0 + W^0$
90199
Prove that there exists a constant $c>0$ such that the following happens