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Mathematics
Andy Brandi's user avatar
Andy Brandi's user avatar
Andy Brandi's user avatar
Andy Brandi
  • Member for 11 years, 8 months
  • Last seen more than 1 year ago
  • Germany
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12
What is an additive group?
Jan 19, 2013
12
Neatest proof that set of finite subsets is countable?
Apr 14, 2013
7
Can $\frac{a}{b} + \frac{b}{a}$ ever be bounded from above, if $a, b \in \mathbb{R}$?
Mar 27, 2013
7
Proving the so-called "Well Ordering Principle"
Apr 12, 2013
6
Showing $\sqrt{2}\sqrt{3} $ is greater or less than $ \sqrt{2} + \sqrt{3} $ algebraically
Dec 30, 2012
3
Showing that $k(1\otimes 1) \neq 0$ when $k<\gcd(n,m)$ in $\mathbb{Z}/n\mathbb{Z}\otimes_{\mathbb{Z}} \mathbb{Z} / m \mathbb{Z}$.
Jan 10, 2013
2
Extending an isomorphism of subgroups
Dec 18, 2012
2
Outer Measure on $\mathbb{R}$
Jan 20, 2013
2
How to show that linear map is invertible?
Jan 29, 2013
2
Let $T \colon \mathbb R^5 \rightarrow \mathbb R^5 $ be a linear transformation.
Feb 9, 2013
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6
Calling methods that are not subject to the test?