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$|px^2+qx+r|\le1$ for all $x$ in $$, show that $|rx^2+qx+p|\le2$ for all $x$ in $$
Computation of $\operatorname{Tor}_1$ and $\operatorname{Ext}^1$
Derivative of determinant, which is correct?
How can I prove this is a metric?
How many books are in a library?
What is the expected length of the largest run of heads if we make 1,000 flips?
How to prove $\text{Rank}(AB)\leq \min(\text{Rank}(A), \text{Rank}(B))$?
$\lim\limits_{x\to\infty}f(x)^{1/x}$ where $f(x)=\sum\limits_{k=0}^{\infty}\cfrac{x^{a_k}}{a_k!}$.
Can we do long division in $\mathbb Z$, where $n$ is square free?
Derivative on Hilbert space
Showing a function is not uniformly continuous
Twelve people travelling in three cars
Annihilator of a simple module
Ordinal tetration: The issue of ${}^{\epsilon_0}\omega$
How to create circles and or sections of a circle when the centre is inaccessible