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Mathematics
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Tobius
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Hi, I'm just some guy who's currently studying mathematics. $e^{i\pi}+1=0$ someone?

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64
Consider a man who travelled exactly 2 km in two hours. Is there a one-hour interval when he traveled exactly 1 km?
Jan 14
9
Proving $a_n = \frac{(-1)^n n}{n+1}$ has no limit
Jan 5
5
Bijectivity of $f(x) = α^qx + αx^q$ over $\mathbb{F}_{q^3}$
Apr 18
5
Wronskian & Linear independence of functions
Jan 24
4
Is this a valid proof that $\displaystyle{\text{T: }\mathbb{R}^m\longmapsto \mathbb{R}^n}$ injective and linear implies $\displaystyle{m \leq n}$?
Jan 4
3
Why isn't the set $\{\;f\in\Bbb{R}[x]\mid f=0 \;\text{or}\; \deg(f)=2\;\}$, with operation $+$, a group?
Feb 2
3
Upper bound of the integral $\int_\delta^\infty t^m e^{-\nu t^2} dt$
Feb 13
2
Are weak and weak-* topologies translation-invariant?
Jan 19
2
Pointwise boundedness and uniform boundedness
Jan 1
2
If probabilities $\mu_n\to \mu$ on every open interval of $I$, does $\mu_n\to \mu$ on the union of countable pairwise disjoint such intervals?
Jan 1