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DanielWainfleet's user avatar
DanielWainfleet's user avatar
DanielWainfleet's user avatar
DanielWainfleet
  • Member for 8 years, 9 months
  • Last seen more than a month ago
  • Wainfleet, ON, Canada
28 votes
Accepted

Preimage of a compact set

17 votes

Limit question - L'Hopital's rule doesn't seem to work

14 votes

Why does 'The King Property' of integration work?

13 votes

Proving $x^4+y^4=z^2$ has no integer solutions

13 votes

Find $n$, where its factorial is a product of factorials

13 votes
Accepted

Is it possible to interchange order of supremum and supremum?

12 votes

Different sizes of infinity

12 votes

Different Approaches for Introducing Elementary Functions

12 votes

Two metric space with same Cauchy sequences

11 votes

Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?

11 votes

What are some things we can prove they must exist, but have no idea what they are?

10 votes

Sequential Continuity does not imply Continuity

10 votes

Examples of problems that are easier in the infinite case than in the finite case.

9 votes

Space of Lipschitz Functions Complete?

9 votes

How to show that the set of open balls with rational centres and rational radii form a countable base for $\mathbb{R}^n$?

9 votes

What are some examples of when Mathematics 'accidentally' discovered something about the world?

9 votes
Accepted

How is it that there are 'gaps' in rational numbers and yet between any two rational numbers, there exists another rational number?

9 votes

Why is belonging not transitive?

8 votes

What are some counter-intuitive results in mathematics that involve only finite objects?

8 votes

What seemingly innocuous results in mathematics require advanced proofs?

8 votes

Proving that $x \mapsto \frac1x$ is convex (without differentiating)

8 votes

Is it true that $0.999999999\ldots=1$?

8 votes
Accepted

Evaluating $\int _{-100}^{100}\lfloor {x^3}\rfloor \,dx$

8 votes
Accepted

How do I calculate $\lim_{n\to \infty} \frac{\ln(n)}{\ln(n+1)}$?

7 votes
Accepted

Is the set of natural numbers $\mathbb{N}$ Open, closed, or neither?

7 votes

What are some of the implications of $\pi + e$ being rational?

7 votes

Where does a Topology student go after Munkres?

7 votes
Accepted

Behavior of $\sum a_n x^n$ given $\sum |a_n - a_{n-1}| < \infty$

7 votes

Why a $20$ digit number starting with eleven $1$'s cannot be a perfect square?

7 votes
Accepted

Compact iff all continuous functions are uniformly cont.

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