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user572780
  • Member for 5 years, 11 months
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4 votes
1 answer
189 views

Partial Differential Equations: Fourier Transform in Space and Time?

4 votes
0 answers
141 views

Is there an analog of frequency for operators?

2 votes
1 answer
493 views

How to inverse Fourier transform the Fourier transform of sin(x)?

2 votes
2 answers
150 views

Prove $|y''(x)| \leq 40$ for all $x \in [1,3]$.

2 votes
1 answer
301 views

If $A + \Delta A$ has eigenvalue $\lambda$, show that $A$ has eigenvalue $\lambda + \Delta \lambda$.

2 votes
2 answers
93 views

"Big O" notation

1 vote
1 answer
105 views

Using alternating-direction implicit method to solve nonzero boundary value problem (transform into zero boundary value problem)

1 vote
1 answer
434 views

Why does reducing a PDE with non-homogeneous boundary conditions work?

1 vote
1 answer
879 views

Deriving the relativistic rocket equations.

1 vote
0 answers
95 views

Do higher order differences within explicit schemes negatively effect stability?

1 vote
0 answers
56 views

What conditions must hold to have a valid integral transform and associated inverse transform?

1 vote
1 answer
289 views

What functions do the weights for the central difference stencils approximate?

1 vote
2 answers
40 views

Why does squaring the pseudoscalar of Clifford algebra $Cl_{2, 0}(\mathbb{R})$ equal 1?

0 votes
2 answers
86 views

What is the variance of the sum of a random sample of random variables?

0 votes
1 answer
1k views

What is a kernel integral operator?

0 votes
1 answer
190 views

Solving a linear partial differential equation by separation of variables

0 votes
1 answer
256 views

Simplifying a differential equation.

0 votes
1 answer
502 views

If the gradient descent flow is a monotone decreasing function, why isn't my training loss monotonic?

0 votes
1 answer
96 views

Prove function is strictly decreasing over interval

0 votes
0 answers
42 views

Algebra in von Neumann analysis for PDEs