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mathematrucker
  • Member for 16 years
  • Last seen more than a month ago
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About

Enjoy problem-solving as a hobby.

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Top posts

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13
Is there a list of all connected T_0-spaces with 5 points?
Jun 22, 2017
11
Mathematics as a hobby
Apr 5, 2010
11
Is there an index for solutions to American Mathematical Monthly problems?
Jun 4, 2018
8
Can closure and complement generate 14 distinct operations on a topological space if no subset generates more than 6 distinct sets?
Mar 21, 2019
8
Smallest relation in complement of partial order that prohibits its extension
Mar 13, 2022
8
The closure-complement-intersection problem
Apr 5, 2010
5
Partitions of the reals such that closures of partition elements are saturated
Jul 22, 2017
4
Is the preimage of the closure the closure of the preimage under a quotient map?
Aug 11, 2016
4
Papers of the masters translated to English in one location
Dec 2, 2022
3
How rigorously can we apply the data supplied by this nonstandard attack on Kuratowski's closure-complement problem?
Oct 11, 2022

Top network posts

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23
Is it a faux pas for a zbMATH reviewer of a published math paper to immediately solve/publish problems it leaves open?
21
The Zentralblatt asked me to review a worthless paper, what to do?
20
What is the smallest cardinality of a Kuratowski 14-set?
12
How many natural numbers are needed to generate 14 distinct subsets under complement and multiplicative closure?
10
Examples of topologies in which all open sets are regular?