Skip to main content

Stack Exchange

DanielWainfleet

Wainfleet, ON, Canada

Age 65 . Retired. Studied math at University of Toronto.

top accounts reputation activity subscriptions
Top Questions
Top Answers
28
Preimage of a compact set
math.stackexchange.com

17
Limit question - L'Hopital's rule doesn't seem to work
math.stackexchange.com

15
Why does 'The King Property' of integration work?
math.stackexchange.com

13
Proving $x^4+y^4=z^2$ has no integer solutions
math.stackexchange.com

13
Find $n$, where its factorial is a product of factorials
math.stackexchange.com

13
Is it possible to interchange order of supremum and supremum?
math.stackexchange.com

12
Two metric space with same Cauchy sequences
math.stackexchange.com

12
Different Approaches for Introducing Elementary Functions
math.stackexchange.com

12
Different sizes of infinity
math.stackexchange.com

11
Does a sequence such that $a_n > 0$ and $a_n \to 0$ but $\sum_{n \geq 0} a_n^t$ diverges $\forall t \in \mathbb{N}$ exist?
math.stackexchange.com

11
What are some things we can prove they must exist, but have no idea what they are?
math.stackexchange.com

11
Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?
math.stackexchange.com

10
Sequential Continuity does not imply Continuity
math.stackexchange.com

10
How to show that the set of open balls with rational centres and rational radii form a countable base for $\mathbb{R}^n$?
math.stackexchange.com

10
Examples of problems that are easier in the infinite case than in the finite case.
math.stackexchange.com

9
Why is belonging not transitive?
math.stackexchange.com

9
How is it that there are 'gaps' in rational numbers and yet between any two rational numbers, there exists another rational number?
math.stackexchange.com

9
Where does a Topology student go after Munkres?
math.stackexchange.com

9
What are some examples of when Mathematics 'accidentally' discovered something about the world?
math.stackexchange.com

9
What are some counter-intuitive results in mathematics that involve only finite objects?
math.stackexchange.com

9
Space of Lipschitz Functions Complete?
math.stackexchange.com

8
Dependence of the equation $a+1=a$ for infinite cardinals $a$ on the axiom of choice
math.stackexchange.com

8
Behavior of $\sum a_n x^n$ given $\sum |a_n - a_{n-1}| < \infty$
math.stackexchange.com

8
What seemingly innocuous results in mathematics require advanced proofs?
math.stackexchange.com

8
Applications of complex numbers to solve non-complex problems
math.stackexchange.com

8
Evaluating $\int _{-100}^{100}\lfloor {x^3}\rfloor \,dx$
math.stackexchange.com

8
Is it true that $0.999999999\ldots=1$?
math.stackexchange.com

8
How do I calculate $\lim_{n\to \infty} \frac{\ln(n)}{\ln(n+1)}$?
math.stackexchange.com

8
Proving that $x \mapsto \frac1x$ is convex (without differentiating)
math.stackexchange.com

7
Is the set of natural numbers $\mathbb{N}$ Open, closed, or neither?
math.stackexchange.com

1 2 3 4