Mathematics
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John Douma
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All Questions Answers
Score Newest
answer
28
Proof: 1007 can not be written as the sum of two primes.
Nov 13, 2015
answer
18
Counting binary operations on a set with $n$ elements
Apr 28, 2013
answer
12
What is the Idea of a Relative Open Set?
May 29, 2013
answer
12
How do I find a point a given distance from another point along a line?
Jun 2, 2013
answer
12
What is sum of all positive odd integers less than $1000$?
Jun 12, 2013
answer
12
How do we know the ratio between circumference and diameter is the same for all circles?
May 1, 2016
answer
10
Problem with basic definition of a tangent line.
Apr 18, 2016
answer
9
Why is it that if a ring is simple, its center must be a field?
Apr 1, 2018
answer
8
If $\int_{a}^b f(x)g(x) dx = 0$ for all continuous functions $g$ satisfying $g(a) = g(b) = 0$, show $f = 0$
Apr 28, 2016
answer
8
Example of $a,~b\in G$ such that $ab\in H\leq G$ and $a^2b^2\notin H.$
Jan 9, 2019

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