Harmonic function vanishes with its normal derivative on a part of boundary; can Green's formula be applied to broken boundary?
69945
A PDE exercise from Gilbarg Trudinger. problem 2.2
89380
A positive harmonic function on the punctured plane is constant
88616
Retraction of the Möbius strip to its boundary
79340
Dirichlet problem in the disk: behavior of conjugate function, and the effect of discontinuities
26224
Differentiating Propagator, Green's function, Correlation function, etc
130180
Smooth function with all derivatives zero
93425
Double integral of an function odd with respect to $y$ over a domain symmetric with respect to $x$ axis
93835
Why do those terms vanish if the metric is Hermitian?
13829
PDE list of equations, derivative for boundarry condition evaluates to true
147654
Calculating Green's function from Dyson's series without normal ordering
96303
When does $h(x^2+y^2)$ be harmonic?
38192
Derivative of inverse function at a point.
59632
Bessel's function in spectral geometry
16291
Discontinuous derivative.
133471
Solve a PDE on a domain $\Omega$ with given boundary conditions
150833
Discontinuities of the derivative of a differentiable function on closed interval
2129
Showing that the derivative operator is not bounded on $L^2 (\mathbb{R})$