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DanielWainfleet's user avatar
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DanielWainfleet
  • Member for 10 years, 5 months
  • Last seen more than 1 year ago
  • Wainfleet, ON, Canada
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Age 65 . Retired. Studied math at University of Toronto.

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28
Preimage of a compact set
Oct 28, 2016
25
Why does 'The King Property' of integration work?
Oct 8, 2020
17
Limit question - L'Hopital's rule doesn't seem to work
Jun 9, 2017
15
Sequential Continuity does not imply Continuity
Sep 30, 2015
15
Is it possible to interchange order of supremum and supremum?
Apr 9, 2016
14
Proving $x^4+y^4=z^2$ has no integer solutions
Jan 8, 2017
13
Is there a non-trivial countably transitive linear order?
Aug 2, 2015
13
Find $n$, where its factorial is a product of factorials
Sep 18, 2015
13
Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?
Jan 20, 2016
12
How to show that the set of open balls with rational centres and rational radii form a countable base for $\mathbb{R}^n$?
Sep 13, 2016

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What does this achievement I have been told have achieved mean?

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11
Possible cardinalities of the remainders of compactifications of $\Bbb R$
10
Two questions about the "grasp" cardinal function
7
Do neutrons in an atomic nucleus exert strong force on each other?