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ryang
  • Member for 12 years, 3 months
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0 votes
1 answer
76 views

If a set in a general metric space consistes entirely of isolated points, can it still have any accumulation points in its complement?

0 votes
2 answers
607 views

How to define an interior point in terms of $\epsilon$-balls?

0 votes
1 answer
92 views

Another question about showing that a point is not an accumulation point of a given set

0 votes
2 answers
2k views

Which is the correct Hessian matrix (the standard matrix of a bilinear form)?

0 votes
2 answers
173 views

If arrivals are not occuring at random, why do arrival times still have a probability distribution?

0 votes
3 answers
131 views

Does statement 1 imply statement 2?

0 votes
1 answer
422 views

Proof of an application of the contraction mapping theorem to differential equations

-1 votes
1 answer
1k views

In the change-of-variables theorem, must $ϕ$ be globally injective?

-1 votes
2 answers
1k views

Some standard improper integrals

-1 votes
4 answers
172 views

Another series convergence question

-1 votes
2 answers
267 views

Can two different graphs have the same complement?

-2 votes
1 answer
271 views

In the change-of-variables theorem, must $\phi (A)$ be open?

-2 votes
1 answer
1k views

Solving the wave equation bounded by one free end and one fixed end

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