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thatsmaths.com
| | theoremoftheweek.wordpress.com
12.3 parsecs away

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| | One of the intriguing facts about infinity mentioned in that Horizon programme (the one on recently thatI disliked) is that there are different sizes of infinity. I thought that this week I'd start discussing that fact. (There might be another theorem of the week on this subject!) Here are two questions for you to consider....
| | matheuscmss.wordpress.com
12.7 parsecs away

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| | Last November, I attended the beautiful conferencePrime Numbers, Determinism and PseudorandomnessatCIRM. This conference was originally prepared to celebrate the 60th birthday ofChristian Mauduit, but unfortunately a tragic event during the summer of 2019 made that this conference ended up becoming a celebration of the memory of Christian. The links to the titles, abstracts, slides and...
| | jmanton.wordpress.com
16.9 parsecs away

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| | The following hints atwhy the quintic equation cannot be solved using radicals. It follows the approach in the first part of Ian Stewart's book "Galois Theory". If time permits, a future post will summarise the approach in V. B. Alekseev's book "Abel's Theorem in Problems and Solutions". Another candidate is Klein's book "Lectures on the...
| | dominiczypen.wordpress.com
75.8 parsecs away

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| Motivation. I stumbled over the following hypergraph coloring concept when reading about an old (and open) problem by Erdos and Lovasz. Let $latex H=(V,E)$ be a hypergraph such that for all $latex e\in E$ we have $latex |e| > 1$, and let $latex Z \neq \emptyset$ be a set. Then a map $latex c:V\to Z$...