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Articles by Eric Towers
Is it possible to receive information if the received power is below the noise floor?
\$\begingroup\$ This relates to my previous question, which I think I have asked in the wrong way: How to insert background EM noise into pathloss equation? I wasn't really interested in detectability of the signal, and I have phrased that question very ambiguously, so let me ask what I would really like to know.
Compiling an application for use in highly radioactive environments
Working for about 4-5 years with software/firmware development and environment testing of miniaturized satellites*, I would like to share my experience here.
Finding the main parent after sorting in a multiplication process
Here is a somewhat verbose and strange way of getting your answer: gets your third list. takes as the argument . returns a list containing the index of the smallest value of the list as a list. Then, returns a list of three elements: the first is the index at which the smallest value in the third list appears, the second is the value of appearing at that index, and the third is the value of the third list (which is the smallest value in this third list).
Find a polynomial from an equality
The route you take is fruitful. $p\left(x\right)=\left(x-2\right)\left(x-8\right)q\left(x\right)$ leads to: $$\left(x-4\right)q\left(2x\right)=2\left(x-2\right)q\left(x\right)$$ Then $4$ must be a root of $q$, so $q\left(x\right)=\left(x-4\right)r\left(x\right)$ leading to: $$r\left(2x\right)=r\left(x\right)$$ Then $r\left(x\right)$ must be a constant polynomial and we end up with: $$p\left(x\right)=c\left(x-2\right)\left(x-4\right)\left(x-8\right)$$
Difference between centralizer and center groups?
The normalizer of a subset of a ring is the part of the ring that commutes with the subset (but not necessarily holding the element of the subset fixed): $g$ in the normalizer of $H \subset G$ means $gH = Hg$, or more specifically, $gh_1 = h_2 g$ for some $h_1, h_2 \in N$. The centralizer of a subset of a ring is the part of the ring that commutes with the subset elementwise (i.e., holding the element of the subset fixed): $g$ in the centralizer of $H \subset G$ means $gh = hg$ for all $h \in H$.
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